Chlorophyll fluorescence is a potential indicator to measure photochemical efficiency in early to late soybean maturity groups under changing day lengths and temperatures

Frontiers in Plant Science

Plant Science

Sonal Mathur¹  Vangimalla R. Reddy¹  Beomseok Seo²  Kambham Raja Reddy³  Anjana Jajoo⁴ 

[1] Adaptive Cropping Systems Laboratory, USDA-Agricultural Research Service (USDA-ARS), Beltsville Agricultural Research Center, Beltsville, MD, United States;Adaptive Cropping Systems Laboratory, USDA-Agricultural Research Service (USDA-ARS), Beltsville Agricultural Research Center, Beltsville, MD, United States;School of Environmental and Forest Sciences, College of the Environment, University of Washington, Seattle, WA, United States;Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS, United States;School of Biotechnology, Devi Ahilya University, Indore, India;

关键词: chlorophyll a fluorescence;    day length (photoperiod);    maturity group;    photosystem II;    soybean;    temperature;   

DOI  :  10.3389/fpls.2023.1228464

 received in 2023-05-24, accepted in 2023-09-27,  发布年份 2023

来源: Frontiers

【 摘 要 】

In this study, we employed chlorophyll a fluorescence technique, to indicate plant health and status in response to changing day lengths (photoperiods) and temperatures in soybean early and late maturity groups. Chlorophyll a fluorescence study indicates changes in light reactions in photosystem II. Experiments were performed for 3-day lengths (12.5, 13.5, and 14.5 h) and five temperatures (22/14°C, 26/18°C, 30/22°C, 34/26°C, and 40/32°C), respectively. The I-P phase declined for changing day lengths. Active reaction centers decreased at long day length for maturity group III. We observed that low temperatures impacted the acceptor side of photosystem II and partially impacted electron transport toward the photosystem I end electron acceptor. Results emphasized that higher temperatures (40/32°C) triggered damage at the oxygen-evolving complex and decreased electron transport and photosynthesis. We studied specific leaf areas and aboveground mass. Aboveground parameters were consistent with the fluorescence study. Chlorophyll a fluorescence can be used as a potential technique for high-throughput phenotyping methods. The traits selected in the study proved to be possible indicators to provide information on the health status of various maturity groups under changing temperatures and day lengths. These traits can also be deciding criteria for breeding programs to develop inbreed soybean lines for stress tolerance and sensitivity based on latitudinal variations.

【 授权许可】

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Copyright © 2023 Mathur, Seo, Jajoo, Reddy and Reddy