木本植物叶片非结构性碳水化合物停留时间与叶片功能性状相关，与叶片经济谱无关

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2024-12-08 DOI:10.1111/nph.20315

Shinichi Asao, Danielle A. Way, Matthew H. Turnbull, Mark Stitt, Nate G. McDowell, Peter B. Reich, Keith J. Bloomfield, Joana Zaragoza-Castells, Danielle Creek, Odhran O'Sullivan, Kristine Y. Crous, John J.G. Egerton, Nicholas Mirotchnick, Lasantha K. Weerasinghe, Kevin L. Griffin, Vaughan Hurry, Patrick Meir, Stephen Sitch, Owen K. Atkin

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引用次数: 0

摘要

非结构碳水化合物（NSC）的浓度可能反映了叶片经济谱（LES）中描述的策略，因为它们依赖于光合作用和呼吸作用。我们研究了NSC浓度与全球5个生物群系19个地点114种植物叶片结构、化学和生理性状的相关性。叶片总NSC浓度在16 ~ 199 mg g−1干质量范围内变化较大，且与叶片气体交换和LES性状基本无关。相比之下，光合速率高的物种叶片NSC停留时间较短，遵循LES中的快-慢策略。一片普通叶子所含的NSCs可以维持一晚的叶片呼吸，在饱和光下只需几个小时的光合作用就可以补充，这表明每天的大部分碳增益都被输出了。我们的研究结果表明，NSC出口与资源投资回报经济学有明显的联系。

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Leaf nonstructural carbohydrate residence time, not concentration, correlates with leaf functional traits following the leaf economic spectrum in woody plants

Nonstructural carbohydrate (NSC) concentrations might reflect the strategies described in the leaf economic spectrum (LES) due to their dependence on photosynthesis and respiration.
We examined if NSC concentrations correlate with leaf structure, chemistry, and physiology traits for 114 species from 19 sites and 5 biomes around the globe.
Total leaf NSC concentrations varied greatly from 16 to 199 mg g⁻¹ dry mass and were mostly independent of leaf gas exchange and the LES traits. By contrast, leaf NSC residence time was shorter in species with higher rates of photosynthesis, following the fast-slow strategies in the LES. An average leaf held an amount of NSCs that could sustain one night of leaf respiration and could be replenished in just a few hours of photosynthesis under saturating light, indicating that most daily carbon gain is exported.
Our results suggest that NSC export is clearly linked to the economics of return on resource investment.

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.