Vapor-pressure-deficit-controlled temperature response of photosynthesis in tropical trees DOI Creative Commons
Chinedu Emmanuel Eze, Klaus Winter, Martijn Slot

et al.

Photosynthetica, Journal Year: 2024, Volume and Issue: 62(3), P. 318 - 325

Published: Oct. 10, 2024

Rising temperatures can affect stomatal and nonstomatal control over photosynthesis, through closure in response to increasing vapor pressure deficit (VPD), biochemical limitations, respectively. To explore the independent effects of temperature VPD, we conducted leaf-level temperature-response measurements while controlling VPD on three tropical tree species. Photosynthesis conductance consistently decreased with whereas photosynthesis typically responded weakly changes when a stable was maintained during measurements, resulting wide parabolic curves. We have shown that negative effect forests across ecologically important ranges does not stem from direct warming processes but indirect warming, VPD. Understanding acclimation potential trees elevated will be critical anticipate consequences global for forests.

Language: Английский

Have We Selected for Higher Mesophyll Conductance in Domesticating Soybean? DOI Creative Commons
Elena A. Pelech, Samantha S. Stutz, Yu Wang

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 27, 2024

ABSTRACT Soybean ( Glycine max ) is the single most important global source of vegetable protein. Yield improvements per unit land area are needed to avoid further expansion onto natural systems. Mesophyll conductance g m quantifies ease with which CO 2 can diffuse from sub‐stomatal cavity Rubisco. Increasing attractive since it increases photosynthesis without increasing water use. Most measurements have been made during steady‐state light saturated photosynthesis. In field crop canopies, fluctuations frequent and speed increase following shade sun transitions affects carbon gain. Is there variability in within soybean germplasm? If so, indirect selection may indirectly increased domestication subsequent breeding for sustainability yield. A modern elite cultivar (LD11) was compared four ancestor accessions soja assumed by concurrent gas exchange isotope discrimination (∆ 13 C). a significant limitation both at steady state through induction but twice value ancestors LD11. This corresponded substantial leaf photosynthetic uptake use efficiency.

Language: Английский

Citations

3
Soybean Oil and Protein: Biosynthesis, Regulation and Strategies for Genetic Improvement DOI
Hui Li,

Jia Sun,

Ying Zhang

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 24, 2024

ABSTRACT Soybean ( Glycine max [L.] Merr.) is one of the world's most important sources oil and vegetable protein. Much energy required for germination early growth soybean seeds stored in fatty acids, mainly as triacylglycerols (TAGs), main seed storage proteins are β‐conglycinin (7S) glycinin (11S). Recent research advances have deepened our understanding biosynthetic pathways transcriptional regulatory networks that control acid protein synthesis organelles such plastid, ribosome endoplasmic reticulum. Here, we review composition oils proteins, summarizing key enzymes transcription factors recently been shown to regulate synthesis/metabolism. We then discuss newest genomic strategies manipulating these genes increase food value soybeans, highlighting priorities future genetic improvement this staple crop.

Language: Английский

Citations

1
Photosynthesis and the stomatal nexus, past, present and future DOI
Michael R. Blatt, Amanda P. Cavanagh, Thomas N. Buckley

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(9), P. 3285 - 3287

Published: July 8, 2024

Language: Английский

Citations

1
Vapor-pressure-deficit-controlled temperature response of photosynthesis in tropical trees DOI Creative Commons
Chinedu Emmanuel Eze, Klaus Winter, Martijn Slot

et al.

Photosynthetica, Journal Year: 2024, Volume and Issue: 62(3), P. 318 - 325

Published: Oct. 10, 2024

Rising temperatures can affect stomatal and nonstomatal control over photosynthesis, through closure in response to increasing vapor pressure deficit (VPD), biochemical limitations, respectively. To explore the independent effects of temperature VPD, we conducted leaf-level temperature-response measurements while controlling VPD on three tropical tree species. Photosynthesis conductance consistently decreased with whereas photosynthesis typically responded weakly changes when a stable was maintained during measurements, resulting wide parabolic curves. We have shown that negative effect forests across ecologically important ranges does not stem from direct warming processes but indirect warming, VPD. Understanding acclimation potential trees elevated will be critical anticipate consequences global for forests.

Language: Английский

Citations

0