Overexpression of jojoba wax ester synthase in poplar increases foliar lipid accumulation, alters stomatal conductance, and increases water use efficiency

IF 3.6 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2025-05-27 DOI:10.1111/plb.70056
A. Amirkhosravi, G.-J. Strijkstra, A. Keyl, F. Häffner, U. Lipka, C. Herrfurth, I. Feussner, A. Polle
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引用次数: 0

Abstract

Abstract Image

杨树过表达霍霍巴蜡酯合成酶,增加叶面脂质积累,改变气孔导度,提高水分利用效率。
杨树是重要的速生、耗水生物量乔木作物。本研究通过对荷荷巴蜡酯合成酶(ScWS)的过表达,瞄准了白杨(Populus x canescens)蜡合成途径产生脂质。我们发现,ScWS过表达引起叶片细胞脂滴的积累,但并未增加叶片表面的蜡质负荷。然而,气孔中封闭或半封闭的保护细胞比例较高,脂质积累异常。在表达scws的杨树中,这种表型伴随着气孔气孔1 (OSP1)的抑制和气孔导度的降低。在温室和室外条件下的短期和长期干旱情景下,ScWS品系提高了水分利用效率,导致节水表型和延迟干旱胁迫。高光照条件下华南杨树光合作用降低,低光照条件下不降低。在短期试验中,ScWS系的生物量产量未受影响,但在两个大田季节结束时,其产量低于野生型杨树,表明存在长期生长权衡。我们的结果为在更节水的杨树中生产脂质开辟了新的机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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