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陆地棉漆酶基因家族成员表达模式分析
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作者 左春阳 李亚玮 +4 位作者 李焱龙 金双侠 朱龙付 张献龙 闵玲 《作物学报》 CAS CSCD 北大核心 2023年第9期2344-2361,共18页
漆酶是铜蓝氧化酶蛋白家族的一员,在植物木质素合成和提高植株抵御胁迫能力等方面发挥着重要作用。本研究从陆地棉基因组中鉴定到104个漆酶基因(GhLAC)家族成员,进行了系统进化树和组织表达图谱的构建,并随机选取了20个基因进行荧光定量... 漆酶是铜蓝氧化酶蛋白家族的一员,在植物木质素合成和提高植株抵御胁迫能力等方面发挥着重要作用。本研究从陆地棉基因组中鉴定到104个漆酶基因(GhLAC)家族成员,进行了系统进化树和组织表达图谱的构建,并随机选取了20个基因进行荧光定量PCR分析,验证了表达热图的结果。为进一步探索漆酶在棉花中担当的角色,本研究采用启动子-GUS融合载体转化拟南芥,通过转基因拟南芥不同发育过程不同组织GUS染色结果,分析了陆地棉漆酶基因家族6个成员(GhLAC12A、GhLAC14A、GhLAC20A、GhLAC25D、GhLAC59D、GhLAC63D)的精细表达模式。为探究漆酶在逆境中发挥的作用,对该6个漆酶基因进行了切割和刺洞2种创伤胁迫诱导表达分析,并利用2个棉花品系‘84021’(高温耐受型)和‘H05’(高温敏感型)在常温和高温胁迫条件下不同时期的花药进行相应基因的荧光定量PCR分析。研究结果表明,随机挑选的20个基因在根、茎、叶、花瓣、花药和柱头6个组织中差异表达,大多数基因的表达与转录组结果一致。6个漆酶基因的启动子能够不同程度地驱动GUS基因在种子萌发时期、二叶期、四叶期表达;创伤处理结果显示GhLAC12A、GhLAC14A的启动子受创伤诱导后驱动GUS蛋白在叶片中表达的能力显著提高,暗示着这2个基因可能参与创伤胁迫响应。6个GhLACs基因在棉花耐高温品系‘84021’的四分体时期和花药开裂期高温胁迫后都有表达量显著下调的趋势,推测GhLACs基因可能负调控陆地棉花药高温耐受性。本研究结果为进一步探索漆酶家族基因功能提供了参考。 展开更多
关键词 陆地棉 漆酶基因 启动子-GUS表达模式分析 花药高温响应 创伤诱导
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Assessment of suitable reference genes for qRT-PCR analysis in Adelphocoris suturalis
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作者 LUO jing MA Chao +6 位作者 LI Zhe ZHU Bang-qin ZHANG Jiang LEI Chao-liang jin shuang-xia J.Joe Hull CHEN Li-zhen 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2018年第12期2745-2757,共13页
Quantitative reverse transcription polymerase chain reaction(qRT-PCR) is the most commonly-used tool for measurement of gene expression, but its accuracy and reliability depend on appropriate data normalization with t... Quantitative reverse transcription polymerase chain reaction(qRT-PCR) is the most commonly-used tool for measurement of gene expression, but its accuracy and reliability depend on appropriate data normalization with the use of one or more stable reference genes. Adelphocoris suturalis is one of the most destructive pests of cotton, but until recently knowledge of its underlying molecular physiology had been hindered by a lack of molecular resources. To facilitate research on this pest, we evaluated 12 common housekeeping genes studied in insects(GAPDH, ACT, βACT, TBP, SDH, βTUB, EF1γ, EF1α, EF1δ, RPL32, RPS15, and RPL27) for their expression stability in A. suturalis when subjected to various experimental treatments, including three biotic(developmental stage and sex, tissue type, and metathoracic scent gland for varying developmental stages and sexes) and one abiotic(RNA interference injection) conditions. Four dedicated algorithms(ΔCt method, geNorm, BestKeeper and NormFinder) were used to analyze gene expression stability. In addition, RefFinder provided an overall ranking of the stability/suitability of these candidates. This study is the first to provide a comprehensive list of suitable reference genes for gene expression analyses in A. suturalis, which can serve to facilitate transcript expression study of related biological processes in this and related species. 展开更多
关键词 Adelphocoris suturalis reference gene QRT-PCR NORMALIZATION expression stability
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