同化率相对于气孔导度的斜率不应被用作衡量水分利用效率或气孔对同化的控制。

IF 2.9 3区生物学 Q2 PLANT SCIENCES

Photosynthesis Research Pub Date : 2023-12-01 Epub Date: 2023-10-30 DOI:10.1007/s11120-023-01054-6

Chandra Bellasio

{"title":"同化率相对于气孔导度的斜率不应被用作衡量水分利用效率或气孔对同化的控制。","authors":"Chandra Bellasio","doi":"10.1007/s11120-023-01054-6","DOIUrl":null,"url":null,"abstract":"Quantifying water use efficiency, and the impact of stomata on CO2 uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilation is erroneous. Through numerical simulations, I substantiate this assertion. I propose the term 'instantaneous transpiration efficiency' for the assimilation-to-transpiration ratio to avoid confusion with 'intrinsic water use efficiency' which refers to the assimilation-to-stomatal conductance ratio, and recommend to compute both metrics for each gas exchange data point.","PeriodicalId":20130,"journal":{"name":"Photosynthesis Research","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10695868/pdf/","citationCount":"0","resultStr":"{\"title\":\"The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation.\",\"authors\":\"Chandra Bellasio\",\"doi\":\"10.1007/s11120-023-01054-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Quantifying water use efficiency, and the impact of stomata on CO2 uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilation is erroneous. Through numerical simulations, I substantiate this assertion. I propose the term 'instantaneous transpiration efficiency' for the assimilation-to-transpiration ratio to avoid confusion with 'intrinsic water use efficiency' which refers to the assimilation-to-stomatal conductance ratio, and recommend to compute both metrics for each gas exchange data point.\",\"PeriodicalId\":20130,\"journal\":{\"name\":\"Photosynthesis Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2023-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10695868/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Photosynthesis Research\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1007/s11120-023-01054-6\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/10/30 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photosynthesis Research","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s11120-023-01054-6","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/10/30 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}

引用次数: 0

摘要

量化水分利用效率以及气孔对二氧化碳吸收的影响是提高作物产量的生理学和努力的关键。尽管很诱人，但依赖同化-气孔导度图的回归斜率来估计水分利用效率或气孔对同化的控制是错误的。通过数值模拟，我证实了这一论断。我提出了同化蒸腾比的术语“瞬时蒸腾效率”，以避免与“内在水分利用效率”混淆，“内在水分使用效率”是指同化气孔导度比，并建议为每个气体交换数据点计算这两个指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation.

查看原文本刊更多论文

The slope of assimilation rate against stomatal conductance should not be used as a measure of water use efficiency or stomatal control over assimilation.

Quantifying water use efficiency, and the impact of stomata on CO₂ uptake are pivotal in physiology and efforts to improve crop yields. Although tempting, relying on regression slopes from assimilation-stomatal conductance plots to estimate water use efficiency or stomatal control over assimilation is erroneous. Through numerical simulations, I substantiate this assertion. I propose the term 'instantaneous transpiration efficiency' for the assimilation-to-transpiration ratio to avoid confusion with 'intrinsic water use efficiency' which refers to the assimilation-to-stomatal conductance ratio, and recommend to compute both metrics for each gas exchange data point.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Photosynthesis Research 生物-植物科学

CiteScore

6.90

自引率

8.10%

发文量

审稿时长

4.5 months

期刊介绍： Photosynthesis Research is an international journal open to papers of merit dealing with both basic and applied aspects of photosynthesis. It covers all aspects of photosynthesis research, including, but not limited to, light absorption and emission, excitation energy transfer, primary photochemistry, model systems, membrane components, protein complexes, electron transport, photophosphorylation, carbon assimilation, regulatory phenomena, molecular biology, environmental and ecological aspects, photorespiration, and bacterial and algal photosynthesis.