Differential transpiration between pods and leaves during stress combination in soybean

• DOI: 10.1101/2022.12.20.521196
• Publication Date: 2022-12-21T01:05:36Z
• Authors: Ranjita Sinha; Benjamin Shostak; Sai Preethi Induri; Sidharth Sen; Sara I. Zandalinas; Trupti Joshi; Felix B. Fritschi; Ron Mittler
• Keywords: 0301 basic medicine; 2. Zero hunger; Glycine max; Dehydration; Water; Plant Transpiration; Flowers; Plants; 15. Life on land; 6. Clean water; Plant Leaves; 03 medical and health sciences; Seeds

ABSTRACT Climate change is causing an increase in the frequency and intensity of droughts, heat waves, their combinations, diminishing agricultural productivity destabilizing societies worldwide. We recently reported that during a combination water deficit (WD) stress (HS) stomata on leaves soybean plants are closed, while flowers open. This unique stomatal response was accompanied by differential transpiration (higher flowers, lower leaves) cooled WD+HS. Here we reveal developing pods subjected to WD+HS use similar acclimation strategy reduce internal pod temperature about 4°C. further show enhanced expression transcripts involved abscisic acid degradation accompanies this response, preventing sealing causes significant temperature. Using RNA-Seq analysis WD+HS, also WD, HS, or distinct from flowers. Interestingly, report although flower, seed numbers per plant decreased under conditions mass larger than number seeds with suppressed/aborted development compared HS. Taken together our findings occurs process limits heat-induced damage production. One sentence summary Differential between buffers