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Endophytic Bacteria Promote the Growth of Suaeda glauca in Saline-Alkali Stress:Regulation of Osmotic Pressure and Antioxidative Defense System
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作者 FENG Kanghong SUN Ping +1 位作者 CHEN Youyuan GUO Jiameng 《Journal of Ocean University of China》 SCIE CAS CSCD 2023年第4期1109-1118,共10页
Endophytic bacteria are promising bacterial fertilizers to improve plant growth under adverse environment.For ecological remediation of coastal wetlands,it was necessary to investigate the effect and interaction of en... Endophytic bacteria are promising bacterial fertilizers to improve plant growth under adverse environment.For ecological remediation of coastal wetlands,it was necessary to investigate the effect and interaction of endophytes on halophytes under saline-alkali stress.In this study,an endophytic bacterium strain HK1 isolated from halophytes was selected to infect Suaeda glauca under pH(7 and 8)and salinity gradient(150,300 and 450mmolL^(-1)).Strain HK1 was identified as Pantoea ananatis and it had ability to fix nitrogen,dissolve inorganic phosphorus and produce indole-3-aceticacid(IAA).The results showed that strain HK1 could promote the growth of S.glauca seedings when the salinity was less than 300mmolL^(-1),in view of longer shoot length and heavier fresh weight.The infected plants could produce more proline to decrease the permeability of cells,which content increased by 26.2%–61.1%compared to the non-infected group.Moreover,the oxidative stress of infected plants was relieved with the malondialdehyde(MDA)content decreased by 16.8%–32.9%,and the peroxidase(POD)activity and catalase(CAT)activity increased by 100%–500%and 6.2%–71.4%,respectively.Statistical analysis revealed that increasing proline content and enhancing CAT and POD activities were the main pathways to alleviate saline-alkali stress by strain HK1 infection,and the latter might be more important.This study illustrated that endophytic bacteria could promote the growth of halophytes by regulation of osmotic substances and strengthening antioxidant activities.This finding would be helpful for the bioremediation of coastal soil. 展开更多
关键词 endophytic bacteria Suaeda glauca plant growth promotion plant-microorganism interaction antioxidant enzyme
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烟草Nicotiana glauca遗传瘤的诱导
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作者 曲冠证 郑唐春 +2 位作者 杜恒瑞 臧丽娜 夏德安 《安徽农业大学学报》 CAS CSCD 北大核心 2012年第3期417-420,共4页
以往的研究证明一些烟草杂种能自发形成遗传瘤,而正常条件下杂交亲本各自本身并不能自发形成遗传瘤。该研究首次从烟草Nicotiana glauca品种中诱导产生出遗传瘤,这些N.glauca遗传瘤与杂种N.glauca×N.langsdorffii遗传瘤具有相同的... 以往的研究证明一些烟草杂种能自发形成遗传瘤,而正常条件下杂交亲本各自本身并不能自发形成遗传瘤。该研究首次从烟草Nicotiana glauca品种中诱导产生出遗传瘤,这些N.glauca遗传瘤与杂种N.glauca×N.langsdorffii遗传瘤具有相同的特征,即在无激素的培养基上能正常分化、对外源植物激素不敏感等特点。该研究结果同时还进一步证明种间杂交并不是诱导烟草产生遗传瘤的唯一因素。 展开更多
关键词 烟草 杂种 遗传瘤 NICOTIANA glauca
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青冈(Quercus glauca)净光合作用与环境因子的关系 被引量:59
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作者 葛滢 常杰 +2 位作者 陈增鸿 潘晓东 秦国强 《生态学报》 CAS CSCD 北大核心 1999年第5期683-688,共6页
分析了青冈(Quercusglauca)光合速率(Pn)与光强(L)、气温(T)和空气相对湿度(RH)在不同叶片类型、季节及全年几个水平上的相互关系,发现Pn与L正相关,在T<25℃时Pn主要由L决定,T>25℃后T对Pn有负作用,T越高负作用越明显,土壤湿度低... 分析了青冈(Quercusglauca)光合速率(Pn)与光强(L)、气温(T)和空气相对湿度(RH)在不同叶片类型、季节及全年几个水平上的相互关系,发现Pn与L正相关,在T<25℃时Pn主要由L决定,T>25℃后T对Pn有负作用,T越高负作用越明显,土壤湿度低时T的负作用表现明显。Pn与RH关系较小,可忽略。不同类型叶片(阳生、阴生)对环境因子反应有较大差异。在1年中的绝大部分时间里,都能通过光照和温度的观测获得叶片光合速率的估计。 展开更多
关键词 青冈 光合 环境因子 模型
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粗枝木麻黄(Casuarina glauca)小枝中缩合单宁提取条件的探讨 被引量:8
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作者 黄玉杰 吴彪 +3 位作者 向平 林益明 纪慈数 向成 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2005年第B06期32-36,共5页
探讨了对粗枝木麻黄(Casuarinaglauca)小枝多酚(Polyphenols)和缩合单宁(Condensedtannins)的适合提取条件.为确保样品中的多酚和缩合单宁的含量不被低估,含有1.0%HCl的7:3的丙酮水提取液是合适的提取溶剂.它能抑制以共价键结合的蛋白... 探讨了对粗枝木麻黄(Casuarinaglauca)小枝多酚(Polyphenols)和缩合单宁(Condensedtannins)的适合提取条件.为确保样品中的多酚和缩合单宁的含量不被低估,含有1.0%HCl的7:3的丙酮水提取液是合适的提取溶剂.它能抑制以共价键结合的蛋白质和纤维素结合态的缩合单宁在样品处理过程中形成和在此酸性条件下对形成的复合物有一定的溶解,能提取出最大量的可溶态的多酚和缩合单宁.同时通过3次以上的提取,样品颗粒大小对可溶性多酚和缩合单宁的影响不显著,但是在全部过100目筛的样品研磨处理下能最多地将结合态的缩合单宁转化为可溶态. 展开更多
关键词 缩合单宁 提取条件 木麻黄 小枝 共价键结合 酸性条件 处理过程 提取溶剂 水提取液 颗粒大小 可溶态 结合态 多酚 样品 复合物 纤维素 蛋白质 HCl 可溶性
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碱蓬(Suaeda glauca)对不同程度富营养化养殖海水的净化效果 被引量:9
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作者 常雅军 张亚 +3 位作者 刘晓静 李乃伟 杜凤凤 姚东瑞 《生态与农村环境学报》 CAS CSCD 北大核心 2017年第11期1023-1028,共6页
针对目前沿海滩涂规模化水产养殖引起的水体富营养化问题,根据江苏滩涂水产养殖的尾水特征,利用室内模拟方法和水培实验,研究碱蓬(Suaeda glauca)在不同程度富营养化养殖海水中的生长特性及其对水体氮、磷的去除效果。结果表明,实验期间... 针对目前沿海滩涂规模化水产养殖引起的水体富营养化问题,根据江苏滩涂水产养殖的尾水特征,利用室内模拟方法和水培实验,研究碱蓬(Suaeda glauca)在不同程度富营养化养殖海水中的生长特性及其对水体氮、磷的去除效果。结果表明,实验期间,碱蓬在高富营养化水体(TN和TP浓度分别为2.4和0.05 mmol·L-1)中的干、鲜重增量最大,与生长在中富营养化(TN和TP浓度分别为1.6和0.03 mmol·L-1)、低富营养化(TN和TP浓度分别为0.8和0.01 mmol·L-1)水体中的碱蓬生物量差异显著(P<0.05)。碱蓬对滩涂水产养殖尾水的氮、磷去除率随水体氮、磷浓度的增加而降低,氮、磷去除率分别达73.2%和74.4%以上。对不同程度富营养化养殖海水中碱蓬各器官的生物量,氮、磷含量与积累量进行分析,结果表明,碱蓬作为在滨海盐渍化土壤中生长的一年生优势物种,具有对滩涂养殖尾水进行生物改良的潜力。 展开更多
关键词 碱蓬 滩涂养殖尾水 富营养化 净化效应
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高大乔木原位与离体叶片气体交换特征的比较--以三种环境下的青冈栎(Cyclobalanopsis glauca)为例 被引量:4
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作者 黄玉清 莫凌 +2 位作者 赵平 张中峰 何成新 《生态学报》 CAS CSCD 北大核心 2008年第9期4508-4516,共9页
乔木由于个体高大,采用便携式仪器(如Li-6400)进行气体交换测定时的采样存在很多困难。研究了岩溶区、非岩溶区和盆栽等3种生境条件下的青冈栎植物叶片离体后的气体交换参数衰变特性并与活体状态进行比较,以确定叶片离体后仍能代表原... 乔木由于个体高大,采用便携式仪器(如Li-6400)进行气体交换测定时的采样存在很多困难。研究了岩溶区、非岩溶区和盆栽等3种生境条件下的青冈栎植物叶片离体后的气体交换参数衰变特性并与活体状态进行比较,以确定叶片离体后仍能代表原位状态的最佳测定时间。叶片离开母体后,气孔短时内略微变大,然后逐渐关闭。不同条件下气孔的这种变化差异较大;蒸腾作用与气孔导度极显著线性相关,蒸腾作用受到气孔关闭的影响明显。离体叶片的蒸腾作用的大小与叶片的温度高低相一致。光合效率与气孔导度也呈显著相关,但相关程度较前者弱。不同温度条件下离体叶片的气体交换特征是不一样的,岩溶区高温加速了叶片的蒸腾速率,减少叶片组织自由含水量,导致水分胁迫的提前到来。温度越低离体叶片光合作用的衰减过程越慢。离体叶片的气体交换参数的在一定时间范围内的可靠性取决于叶片温度。在温度较低的时候(如20℃),离体叶片的可靠性20min以上,温度比较高(非岩溶区,温度约为32℃))的情况下,只有10min左右,而温度很高(岩溶区,叶温≥32℃)的情况下,这种可靠时间只有3~6min。 展开更多
关键词 离体和活体叶片 气体交换 青冈栎 生境 最佳测定时间
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黄山青冈(Cyclobalanopsis glauca)个体繁殖贡献率 被引量:4
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作者 陈小勇 宋永昌 《生态学报》 CAS CSCD 北大核心 1999年第5期676-682,共7页
结合Schoen&Stewart和Roeder等的方法构建了一个根据幼苗中配子的频率计算种群内各个体繁殖贡献率的模型。并对黄山一青冈种群内个体繁殖贡献率进行了计算,结果表明,该种群中幼苗的观察频率与期望频率存在显著的差异(P<0.01)。... 结合Schoen&Stewart和Roeder等的方法构建了一个根据幼苗中配子的频率计算种群内各个体繁殖贡献率的模型。并对黄山一青冈种群内个体繁殖贡献率进行了计算,结果表明,该种群中幼苗的观察频率与期望频率存在显著的差异(P<0.01)。成体的繁殖贡献率存在较大的差异,3个个体的繁殖贡献率为0,对幼苗贡献率最大的达10.89%,种群外个体对幼苗的贡献率也较大,为18.42%。个体之间的交配以相隔3~12m最多,自交约为8%,与种群外传来的花粉交配占总的17.65%。主要是研究种群较小且与邻近种群相隔不远有关,另外,青冈风媒传粉也是造成此现象的原因之一。 展开更多
关键词 配子频率 繁殖贡献率 交配距离 幼苗 青冈
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水生美人蕉(Canna glauca)与铜钱草(Hydrocotyle vulgaris)的光合特性及其对氮磷去除效果研究 被引量:2
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作者 余红兵 肖润林 周小梅 《生态环境学报》 CSCD 北大核心 2020年第5期1014-1020,共7页
为了探讨沟渠水生植物的光合特性及其氮磷去除效果,为水生植物应用于沟渠污染水体的生态修复及物种选择提供理论依据,以生态沟渠水生美人蕉与铜钱草两种水生植物为试验材料,在晴天采用便携式CID-340光合仪测定了净光合速率(Pn)等生理生... 为了探讨沟渠水生植物的光合特性及其氮磷去除效果,为水生植物应用于沟渠污染水体的生态修复及物种选择提供理论依据,以生态沟渠水生美人蕉与铜钱草两种水生植物为试验材料,在晴天采用便携式CID-340光合仪测定了净光合速率(Pn)等生理生态指标(光合有效辐射(PAR),气孔导度(Gs),胞间CO2浓度(Ci)和蒸腾速率(Tr)),并测定了沟渠水体的氮磷含量。结果表明:水生美人蕉和铜钱草在自然条件下叶片净光合速率日变化均呈双峰曲线,中午光合“午休”现象明显;水生美人蕉叶片净光合速率日均值大于铜钱草,其净光合速率受气孔导度的影响也最大,而铜钱草净光合速率则受光合有效辐射和气孔导度的影响较大;另外,水生美人蕉和铜钱草的净光合速率与沟渠总氮的去除效果呈显著正相关,而与总磷去除效果无显著正相关,因此,净光合速率可作为净化沟渠水体植物选择的重要依据之一。且由于水生美人蕉总氮的去除率与铜钱草相比有较大提高,可作为净化沟渠水体的优选植物,因此研究沟渠水生植物的光合特性对氮磷去除效果具有重要意义。 展开更多
关键词 水生美人蕉 铜钱草 光合特性 氮磷 去除效果 研究
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石灰岩地区淡竹(Phyllostachys glauca)秆形规律研究 被引量:3
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作者 黎祖尧 杨光耀 +2 位作者 杜天真 程丹阳 方力 《竹子研究汇刊》 北大核心 1995年第1期42-45,共4页
本文运用3种回归分析方法,研究淡竹竹壁厚度与胸径和高度之间的相关性,结果指出:淡竹竹壁厚度与胸径和高度之间存在着明显的线性关系,回归方程为y=0.0321+0.1723x_1-0.0116x_2,复相关系数达0.9017;胸径和高度的2个生长因子中,竹壁厚度... 本文运用3种回归分析方法,研究淡竹竹壁厚度与胸径和高度之间的相关性,结果指出:淡竹竹壁厚度与胸径和高度之间存在着明显的线性关系,回归方程为y=0.0321+0.1723x_1-0.0116x_2,复相关系数达0.9017;胸径和高度的2个生长因子中,竹壁厚度与胸径密切相关,偏相关系数0.7507,而与高度相关性不明显,偏相关系数仅为-0.1438。 展开更多
关键词 淡竹 秆形 相关性
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Two genetically distinct units of Sinomanglietia glauca (Magnoliaceae) detected by chloroplast PCR-SSCP 被引量:3
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作者 Zhi-Rong ZHANG Lai-Chun LUO +1 位作者 Ding WU Zhi-Yong ZHANG 《Journal of Systematics and Evolution》 SCIE CSCD 北大核心 2009年第2期110-114,共5页
Sinomanglietia glauca is a critically endangered species described from Jiangxi Province in the 1990s. Recently two populations were discovered from Yongshun County of west Hunan Province, about 450 km away from those... Sinomanglietia glauca is a critically endangered species described from Jiangxi Province in the 1990s. Recently two populations were discovered from Yongshun County of west Hunan Province, about 450 km away from those in Jiangxi. Because of the new findings and the poor reproducibility inherent to RAPD and ISSR markers of previous studies, the population structure of this rare species was reanalyzed with chloroplast PCR-SSCP (single-stranded conformation polymorphism), including all of four recorded populations. The results showed that two distinct haplotypes characterized Jiangxi and Hunan populations separately, with no genetic variation occurring within regions. We postulated that this surprising pattern might result from habitat fragmenta- tion and demographic bottlenecks during and/or after the Quaternary glaciation. On the basis of the pronounced genetic structure, two evolutionarily significant units (ESUs) were recommended for effective conservation of S. glauca. 展开更多
关键词 chloroplast genome genetic structure PCR-SSCP Sinomanglietia glauca.
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基于稳定同位素的东太平洋大青鲨(Prionace glauca)营养级研究 被引量:1
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作者 王洁 朱江峰 +1 位作者 戴小杰 肖悦悦 《海洋与湖沼》 CAS CSCD 北大核心 2016年第2期369-373,共5页
碳、氮稳定同位素为分析淡水和海洋生态系统的生物营养关系提供了有力手段,但在大洋鱼类中的应用还很少。本研究以热带东太平洋大青鲨(Prionace glauca)整节脊椎骨作为样品(叉长范围153—242cm),运用稳定同位素技术,分析大青鲨的δ^(13)... 碳、氮稳定同位素为分析淡水和海洋生态系统的生物营养关系提供了有力手段,但在大洋鱼类中的应用还很少。本研究以热带东太平洋大青鲨(Prionace glauca)整节脊椎骨作为样品(叉长范围153—242cm),运用稳定同位素技术,分析大青鲨的δ^(13)C值和δ^(15)N值及其变化,比较不同基线生物的选择对营养级计算的影响。结果表明,大青鲨δ^(13)C范围为–15.76‰—–13.41‰,最大差值2.35‰;δ^(15)N范围为10.62‰—17.72‰,最大差值7.1‰;δ^(13)C值和δ^(15)N值随个体长度的变化不明显(可能原因是样品鱼均为较大个体),性别间的差异不显著,但不同基线生物的选择对营养级计算值的影响较大。本文研究表明,通过整节脊椎骨的稳定同位素测定来获得大青鲨的摄食特征信息是可行的。由于基线生物对营养级计算的影响问题难以在短期内解决,今后可将相对营养级或营养级的变化作为重点,研究人类活动(如捕捞)对大洋鱼类摄食和营养级的影响。 展开更多
关键词 稳定同位素 营养级 大青鲨 东太平洋
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粉蓝烟草(Nicotiana glauca)花柱S-糖蛋白的发达及对花粉管生长的影响 被引量:1
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作者 李润植 毛雪 李彩霞 《作物学报》 CAS CSCD 北大核心 1999年第1期120-125,共6页
本文报道了粉蓝烟草花柱S-糖蛋白的发达特性及对花粉萌发和花粉管生长的影响。开花后1~20d内,花柱S-糖蛋白在柱头下1~1.scm处大量表达,与活体上花粉管停止生长的时间和部位相吻和。在培养基中加入S-糖蛋白时,不同来源的花粉均能顺利萌... 本文报道了粉蓝烟草花柱S-糖蛋白的发达特性及对花粉萌发和花粉管生长的影响。开花后1~20d内,花柱S-糖蛋白在柱头下1~1.scm处大量表达,与活体上花粉管停止生长的时间和部位相吻和。在培养基中加入S-糖蛋白时,不同来源的花粉均能顺利萌发,但是同源花粉管生长却被特异性地抑制,而非同源花粉则能继续正常生长。在优化离体培养条件下,花粉管生长速率仍低于在活体上的生长速率。与对照相比,加入s-糖蛋白后,花粉管生长长度变异性增加。 展开更多
关键词 粉蓝烟草 自交不亲和性 花柱S糖蛋白 花粉管生长
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Growth Effect of Biennial Seedlings of Half-sib Families of Cyclobalanopsis glauca 被引量:3
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作者 Jiyou WU Yong CHENG +4 位作者 Minggao CHEN Jiafa CHEN Zhe WU Dezhi LIAO Yao SHU 《Agricultural Biotechnology》 CAS 2018年第5期159-161,共3页
The seedling height and ground diameter of 42 half-sib families of biennial Cyclobalanopsis glauca were investigated and compared. The results showed that there were extremely significant differences between different... The seedling height and ground diameter of 42 half-sib families of biennial Cyclobalanopsis glauca were investigated and compared. The results showed that there were extremely significant differences between different families in the terms of seedling height and ground diameter. According to the seedling height and ground diameter, families 39, 27, 28 and 19 of C. glauca were superior to other families at the seedling stage. 展开更多
关键词 Cyclobalanopsis glauca Half-sib families Seedling height Ground diameter
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粉蓝烟草(Nicotiana glauca)S—糖蛋白对离体花粉管生长的影响 被引量:1
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作者 李润植 毛雪 《山西农业大学学报》 CAS 1996年第3期217-221,共5页
在已论述粉蓝烟草(Nicotiana glauca)花柱S—糖蛋白分离和测序的基础之上,本文报道了离体培养条件下,纯化的S—糖蛋白对花粉萌发及花粉管生长的影响.在培养基中加入S—糖蛋白时,不同来源的花粉均能顺利萌发,但是同源花粉管生长却被特异... 在已论述粉蓝烟草(Nicotiana glauca)花柱S—糖蛋白分离和测序的基础之上,本文报道了离体培养条件下,纯化的S—糖蛋白对花粉萌发及花粉管生长的影响.在培养基中加入S—糖蛋白时,不同来源的花粉均能顺利萌发,但是同源花粉管生长却被特异性地抑制,而非同源花粉则能继续正常生长.在优化离体培养条件下,花粉管生长速率仍低于在活体上的生长速率.与对照相比,加入S—糖蛋白后,花粉管生长长度变异性增加.另外,即使绝大多数同源花粉管生长被S—糖蛋白所抑制,仍有个别花粉管继续正常生长,其原因需进一步探讨. 展开更多
关键词 粉蓝烟草 烟草 自交不亲和性 离体花粉管生长
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Potential Effects of Episodic Deposition on Nutrients and Heavy Metals in Decomposing Litters of Suaeda glauca in Salt Marsh of the Yellow River Estuary, China 被引量:1
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作者 CHEN Bingbing SUN Zhigao 《Chinese Geographical Science》 SCIE CSCD 2020年第3期466-482,共17页
Episodic deposition has been recognized as a major factor affecting the decomposition rate of detrital material in salt marshes. In this paper, three one-off burial treatments, no burial treatment(0 cm, NBT), current ... Episodic deposition has been recognized as a major factor affecting the decomposition rate of detrital material in salt marshes. In this paper, three one-off burial treatments, no burial treatment(0 cm, NBT), current burial treatment(10 cm, CBT) and strong burial treatment(20 cm, SBT), were designed in intertidal zone of the Yellow River Estuary to determine the potential influences of episodic deposition on nutrient(C, N) and heavy metal(Pb, Cr, Cu, Zn, Ni, Mn, Cd, V and Co) variations in decomposing litters of Suaeda glauca. Results showed that although various burial treatments showed no statistical difference in decomposition rate of S. glauca, the values generally followed the sequence of CBT(0.002 403/d) > SBT(0.002 195/d) > NBT(0.002 060/d). The nutrients and heavy metals in decomposing litters of the three burial treatments exhibited different variations except for N, Cu, Cr, Ni and Co. Except for Mn, no significant differences in C, N, Pb, Cr, Cu, Zn, Ni, V and Co concentrations occurred among the three treatments(P > 0.05). With increasing burial depth, Cr and Cd levels generally increased while Cu, Ni and Mn concentrations decreased. Although episodic deposition was generally favorable for C and N release from S. glauca, its influence on release was insignificant. In the three burial treatments, Pb, Cr, Zn, Ni, Mn, V and Co stocks in S. glauca generally evidenced the export of metals from litter to environment, and, with increasing burial depth, the export amounts increased greatly. The S. glauca were particular efficient in binding Cd and releasing Pb, Cr, Zn, Ni, Mn, V and Co, and, with increasing burial depth, stocks of Cu in decomposing litters generally shifted from release to accumulation. The experiment indicated that the potential eco-toxic risk of Pb, Cr, Zn, Ni, Mn, V and Co exposure would be serious as the strong burial episodes occurred in S. glauca marsh. 展开更多
关键词 decomposition nutrient and metal episodic deposition Suaeda glauca Yellow River Estuary
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青冈栎(Cyclobalanopsis glauca)与红菇(Russula)抗疲劳作用的比较 被引量:2
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作者 甘耀坤 梁钧淞 黄明月 《玉林师范学院学报》 2013年第5期58-64,共7页
目的:比较青冈栎(Cyclobalanopsis glauca)树叶、树根与红菇(Russula)的抗疲劳作用,探讨青冈栎树叶、树根替代红菇走向药品和保健品市场的可能性.方法:将小鼠按体重随机分为对照组(饲喂普通饲料)和实验组(饲喂加有红菇、青冈栎树叶或树... 目的:比较青冈栎(Cyclobalanopsis glauca)树叶、树根与红菇(Russula)的抗疲劳作用,探讨青冈栎树叶、树根替代红菇走向药品和保健品市场的可能性.方法:将小鼠按体重随机分为对照组(饲喂普通饲料)和实验组(饲喂加有红菇、青冈栎树叶或树根提取液的饲料,这3种饲料又分别设25、50、100mg/g剂量组,每天定量饲喂完后给予普通饲料自由摄食).受试21天后测定小鼠爬竿时间及游泳后乳酸脱氢酶(LDH)活力和肝糖原等指标.结果:与对照组比较,青冈栎树叶、树根和红菇均能显著延长小鼠爬竿时间,提高LDH活力和肝糖原含量;与红菇比较,青冈栎树叶50mg/g剂量组的爬竿时间极显著延长,青冈栎树根肝糖原含量偏低,其余指标均无显著差异,也无明显剂量效应关系.结论:青冈栎树叶抗疲劳效果与红菇相当,青冈栎树根次之. 展开更多
关键词 红菇 青冈栎 抗疲劳比较
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Assessment of Reproductive Potential of Different Populations of Angelica glauca Edgew.,a Critically Endangered Himalayan Medicinal Herb
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作者 Anil Kumar Bisht Arvind Bhatt +1 位作者 R.S.Rawal Uppeandra Dhar 《Journal of Mountain Science》 SCIE CSCD 2008年第1期84-90,共7页
Angelica glauca is one of the important medicinal plants and it is widely used by indigenous communities for different purposes. The present study analyzes variability in reproductive characters of A. glauca. The repr... Angelica glauca is one of the important medicinal plants and it is widely used by indigenous communities for different purposes. The present study analyzes variability in reproductive characters of A. glauca. The reproductive parts were found having significant positive correlation with altitude (e.g.,number of umbellets /umber r= 0.857,p<0.05; umbel diameter r=0.735,p<0.05). 展开更多
关键词 Angelica glauca critically endangered HIMALAYA medicinal plant POPULATION reproductive potential
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Expression of Genes Associated with Nickel Resistance in White Spruce (<i>Picea glauca</i>) under Nickel Stress: Analysis of AT2G16800 and <i>NRAMP</i>Genes
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作者 Meagan Boyd Kabwe Nkongolo 《American Journal of Plant Sciences》 2020年第8期1163-1174,共12页
Heavy metals such nickel (Ni) can cause toxicity by 1) displacing essential components in the biomolecules, 2) blocking the functional group of molecules, or 3) modifying enzymes, proteins, the plasma membrane, and me... Heavy metals such nickel (Ni) can cause toxicity by 1) displacing essential components in the biomolecules, 2) blocking the functional group of molecules, or 3) modifying enzymes, proteins, the plasma membrane, and membrane transporters. The main objective of the present study was to investigate the effect of nickel (Ni) on gene expression of nitrate on gene expression with a focus on the genes coding for the high affinity Ni transporter family protein </span><i><span style="font-family:Verdana;">AT</span></i><span style="font-family:Verdana;">2</span><i><span style="font-family:Verdana;">G</span></i><span style="font-family:Verdana;">16800, and natural resistance-associated macrophage protein (</span><i><span style="font-family:Verdana;">NRAMP</span></i><span style="font-family:Verdana;">). Ni toxicity was assessed by treating seedlings with an aqueous solution of nickel nitrate salt [Ni(NO</span><sub><span style="font-family:Verdana;">3</span></sub><span style="font-family:Verdana;">)</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;">] at the concentrations of 150 mg, 800 mg, and 1600 mg of nickel per 1 kg of dry soil. RT-qPCR was used to measure the expression of </span><i><span style="font-family:Verdana;">AT</span></i><span style="font-family:Verdana;">2</span><i><span style="font-family:Verdana;">G</span></i><span style="font-family:Verdana;">16800, and </span><i><span style="font-family:Verdana;">NRAMP</span></i><span style="font-family:Verdana;"> genes in samples treated with nickel nitrates and controls. The results revealed that </span><i><span style="font-family:Verdana;">P.</span></i> </span><i><span style="font-family:Verdana;">glauca</span></i><span style="font-family:""><span style="font-family:Verdana;"> is resistant to Ni based on lack of plant damage at all nickel concentrations. Ni has no effect on the expression of the </span><i><span style="font-family:Verdana;">AT</span></i><span style="font-family:Verdana;">2</span><i><span style="font-family:Verdana;">G</span></i><span style="font-family:Verdana;">16800 gene in needles or roots. However, it induced an upregulation of the </span><i><span style="font-family:Verdana;">NRAMP</span></i><span style="font-family:Verdana;"> genes in roots at all the doses tested (150 mg/kg, 800 mg/kg, and 1600 mg/kg). On the other hand, Ni has no effect on the expression of the </span><i><span style="font-family:Verdana;">NRAMP</span></i><span style="font-family:Verdana;"> gene in needle but the lowest dose of potassium (150 mg/kg) upregulated this gene in needle tissues. 展开更多
关键词 Nickel Toxicity Gene Expression Picea glauca AT2G16800 NRAMP Genes RT-QPCR
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Influences of Different Habitats on Asexual Propagation of Wild Gastrodia elata f. glauca being Domesticated in Ganzi
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作者 Xueqiang XIE 《Agricultural Science & Technology》 CAS 2015年第10期2111-2114,共4页
[Objective] The influences of different habitats on asexual propagation of wild Geg(abbreviation for Gastrodia elata Bl. f. glauca S. Chow) being domesticated in Ganzi prefecture was studied. [Method] The research tri... [Objective] The influences of different habitats on asexual propagation of wild Geg(abbreviation for Gastrodia elata Bl. f. glauca S. Chow) being domesticated in Ganzi prefecture was studied. [Method] The research trial was carried out in the following three kinds of habitats at the same time: the plastic greenhouses, the birch forest of shady slope and the shrubbery of sunny slope, and the results were analyzed with group data average hypothesis test method. [Result] The overall tuber(the juvenile tuber, the immature tuber and the mature tuber) yield and the mature tuber yield were both very significantly higher in the plastic greenhouses than in the other two types of habitats, and respectively reached 9.52 and 6.70 kg/m2; the mature tuber drying rate was dramatically or very dramatically lower in the plastic greenhouses than in the other two types of habitats, and was 23.84%; the stabilities of the overall tuber yield, the mature tuber yield and the drying rate were all reduced in the order of greenhouses, birch forest and shrubbery; and the dry mature tuber yield of the plastic greenhouses was the highest in the three kinds of habitats, and was 1.60 kg/m2. [Conclusion] A good habitat had to be created or chosen in the domesticating cultivation of the wild Geg in Ganzi prefecture. The preferred choice was the plastic greenhouse, the alternative one was the deciduous broadleaved forest of shady slope. The imitating wild planting of the wild Geg should be done in the warm moist deciduous broad-leaved forest of shady slope. 展开更多
关键词 HABITAT Gastrodia elata BI. f. glauca S. Chow Asexual propagation Domesticating cultivation Imitating wild planting Overall tuber yield sum Mature tu- ber yield Drying rate
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Effect of Tree Species and Dosage of Rhizomorph Wood on Asexual Propagation of Wild Gastrodia elata. Bl. f. glauca S. Chow in Ganzi
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作者 Xueqiang XIE 《Agricultural Science & Technology》 CAS 2015年第9期1840-1844,共5页
The effects of the tree species and the dosages of Armillariella mellea rhizomoph wood on asexual propagation of wild Gastrodia elata Bl. f. glauca S. Chow were studied in Ganzi prefecture. The results showed that tre... The effects of the tree species and the dosages of Armillariella mellea rhizomoph wood on asexual propagation of wild Gastrodia elata Bl. f. glauca S. Chow were studied in Ganzi prefecture. The results showed that tree species had a very significant effect on asexual reproduction yield of wild Gastrodia elata Bl. f. glauca S. Chow. The drying rate and yield of Gastrodia elata Bl. f. glauca S. Chow cultured by close grained woods such as Quercus spinosa David ex Fr. was extremely significant higher than that cultured by coarse grained wood such as Betula platyphylla Suk. The dosage had a very significant effect on the yield of wild Gastrodia elata Bl. f. glauca S. Chow whereas it had no influence on the drying rate. 展开更多
关键词 Tree species of Armillariella mellea rhizomoph wood Dosage of Armil- lariella mellea rhizomorph wood Gastrodia elata BI. f. glauca S. Chow Asexual propagation Yield Drying rate
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