利用本地多样性提高玉米光系统II的最大量子效率

IF 6.5 1区 生物学 Q1 PLANT SCIENCES
Sebastian Urzinger, Viktoriya Avramova, Monika Frey, Claude Urbany, Daniela Scheuermann, Thomas Presterl, Stefan Reuscher, Karin Ernst, Manfred Mayer, Caroline Marcon, Frank Hochholdinger, Sarah Brajkovic, Bernardo Ordas, Peter Westhoff, Milena Ouzunova, Chris-Carolin Schön
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引用次数: 0

摘要

玉米种植的可持续性将从早期播种中获得巨大收益,但在温带气候下,早期发育期间的低温会阻碍玉米种植的可持续性。研究人员发现,欧洲玉米地方品种nadh -脱氢酶样(NDH)复合体(ndhm1) M亚基基因的等位基因变异通过NDH介导的光系统I周围的循环电子传递(CET)影响了几个与寒冷气候下早期发育相关的数量性状,这一过程对光合作用和光保护至关重要。首先,我们研究了光系统II在黑暗适应叶片(Fv/Fm)中最大潜在量子产量的全基因组关联,利用了ndhm1中hAT转座子插入对多个数量性状(早期株高、Fv/Fm、叶绿素含量和耐寒性)的巨大表型效应,这些性状是由NDHM和相关NDH成分的蛋白质水平降低引起的。对ndhm1本地等位基因系列的分析发现,与普通等位基因相比,一个罕见的ndhm1等位基因与Fv/Fm、光系统II效率和光适应叶片的微小但显著的改善(ΦPSII)和早期株高有关。我们的工作展示了从本地适应的地方品种中提取有利等位基因,为通过育种或基因组编辑扩大精英种质的遗传变异提供了有效的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Embracing native diversity to enhance the maximum quantum efficiency of photosystem II in maize
The sustainability of maize cultivation would benefit tremendously from early sowing, but is hampered by low temperatures during early development in temperate climates. We show that allelic variation within the gene encoding subunit M of the NADH-dehydrogenase-like (NDH) complex (ndhm1) in a European maize landrace affects several quantitative traits that are relevant during early development in cold climates through NDH-mediated cyclic electron transport (CET) around photosystem I, a process crucial for photosynthesis and photoprotection. Beginning with a genome-wide association study for maximum potential quantum yield of photosystem II in dark-adapted leaves (Fv/Fm), we capitalized on the large phenotypic effects of a hAT transposon insertion in ndhm1 on multiple quantitative traits (early plant height, Fv/Fm, chlorophyll content, and cold tolerance) caused by the reduced protein levels of NDHM and associated NDH components. Analysis of the ndhm1 native allelic series revealed a rare allele of ndhm1 that is associated with small albeit significant improvements of Fv/Fm, photosystem II efficiency in light-adapted leaves (ΦPSII), and early plant height compared to common alleles. Our work showcases the extraction of favorable alleles from locally adapted landraces, offering an efficient strategy for broadening the genetic variation of elite germplasm by breeding or genome editing.
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来源期刊
Plant Physiology
Plant Physiology 生物-植物科学
CiteScore
12.20
自引率
5.40%
发文量
535
审稿时长
2.3 months
期刊介绍: Plant Physiology® is a distinguished and highly respected journal with a rich history dating back to its establishment in 1926. It stands as a leading international publication in the field of plant biology, covering a comprehensive range of topics from the molecular and structural aspects of plant life to systems biology and ecophysiology. Recognized as the most highly cited journal in plant sciences, Plant Physiology® is a testament to its commitment to excellence and the dissemination of groundbreaking research. As the official publication of the American Society of Plant Biologists, Plant Physiology® upholds rigorous peer-review standards, ensuring that the scientific community receives the highest quality research. The journal releases 12 issues annually, providing a steady stream of new findings and insights to its readership.
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