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Potential distribution of Haloxylon ammodendron in Central Asia under climate change
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作者 CHEN Zhuo SHAO Minghao +2 位作者 HU Zihao GAO Xin LEI Jiaqiang 《Journal of Arid Land》 SCIE CSCD 2024年第9期1255-1269,共15页
Understanding the spatial distribution of plant species and their dynamic changes in arid areas is crucial for addressing the challenges posed by climate change.Haloxylon ammodendron shelterbelts are essential for the... Understanding the spatial distribution of plant species and their dynamic changes in arid areas is crucial for addressing the challenges posed by climate change.Haloxylon ammodendron shelterbelts are essential for the protection of plant resources and the control of desertification in Central Asia.Thus far,the potential suitable habitats of H.ammodendron in Central Asia are still uncertain in the future under global climate change conditions.This study utilised the maximum entropy(MaxEnt)model to combine the current distribution data of H.ammodendron with its growth-related data to analyze the potential distribution pattern of H.ammodendron across Central Asia.The results show that there are suitable habitats of H.ammodendron in the Aralkum Desert,northern slopes of the Tianshan Mountains,and the upstream of the Tarim River and western edge of the Taklimakan Desert in the Tarim Basin under the current climate conditions.The period from 2021 to 2040 is projected to undergo significant changes in the suitable habitat area of H.ammodendron in Central Asia,with a projected 15.0% decrease in the unsuitable habitat area.Inland areas farther from the ocean,such as the Caspian Sea and Aralkum Desert,will continue to experience a decrease in the suitable habitats of H.ammodendron.Regions exhibiting frequent fluctuations in the habitat suitability levels are primarily found along the axis stretching from Astana to Kazakhskiy Melkosopochnik in Kazakhstan.These regions can transition into suitable habitats under varying climate conditions,requiring the implementation of appropriate human intervention measures to prevent desertification.Future climate conditions are expected to cause an eastward shift in the geometric centre of the potential suitable habitats of H.ammodendron,with the extent of this shift amplifying alongside more greenhouse gas emissions.This study can provide theoretical support for the spatial configuration of H.ammodendron shelterbelts and desertification control in Central Asia,emphasising the importance of proactive measures to adapt to climate change in the future. 展开更多
关键词 Haloxylon ammodendron potential suitable habitats climate change DESERTIFICATION maximum entropy(MaxEnt)model Central Asia aralkum Desert
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Biotechnological Assessment of Suaeda arcuate under in Vitro Conditions
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作者 Khulkar Khalbekova Jamoliddin Ziyavitdinov 《Advances in Bioscience and Biotechnology》 2023年第8期359-367,共9页
This article presents data on the introduction of in vitro culture and microclonal propagation of plants identified in the group of hyperhalophytes belonging to the species Suaeda arcuata Bunge. This study was carried... This article presents data on the introduction of in vitro culture and microclonal propagation of plants identified in the group of hyperhalophytes belonging to the species Suaeda arcuata Bunge. This study was carried out to optimize the composition of nutrient media for the main stages of reproduction in vitro, as well as studies on the rooting and adaptation of regenerants for species of the genus Suaeda obtained from axillary or apical buds, but more often from stem segments with a node. In this work, hormones of the cytokinin and auxin series, or a combination of them, were added to the nutrient environment for growth activation. The analyzing of microplants for the content of soluble in water B vitamins was carried out. As a result of the research, it was found that intact Suaeda arcuata plants in their natural habitats produce a large amount of soluble in water vitamins: riboflavin—0.062% and thiamine up to 0.006%. And in regenerated plants obtained on media without hormones, the content of vitamins was: B2 0.053%, B1 0%, respectively, and with a combination of 1/2 MS + 1 mg/l 6-BAP + 0.3 mg/l IAA + 2, 4-D, the content of vitamins varied as follows: riboflavin—0.059%, folic acid—0.030%, and thiamine was not detected. The cultivation of regenerates on the environment 1/2 MS + 1 mg/l 6-BAP + 0.3 mg/l IAA + 2,4-D showed the best effect on the growth of regenerants, created the possibility of obtaining the maximum amount of biomass and accumulation of B vitamins. 展开更多
关键词 aralkum Hyperhalophyte In Vitro EXPLANT STERILIZATION SEEDS MICROPROPAGATION
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