AUTHOR=Jansma Stuart Y. , Sergeeva Lidiya I. , Tikunov Yury M. , Kohlen Wouter , Ligterink Wilco , Rieu Ivo TITLE=Low Salicylic Acid Level Improves Pollen Development Under Long-Term Mild Heat Conditions in Tomato JOURNAL=Frontiers in Plant Science VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2022.828743 DOI=10.3389/fpls.2022.828743 ISSN=1664-462X ABSTRACT=
Exposure to high temperatures leads to failure in pollen development, which may have significant implications for food security with ongoing climate change. We hypothesized that the stress response-associated hormone salicylic acid (SA) affects pollen tolerance to long-term mild heat (LTMH) (≥14 days exposure to day-/nighttime temperature of 30–34/24–28°C, depending on the genotype), either positively, by inducing acclimation, or negatively, by reducing investment in reproductive development. Here, we investigated these hypotheses assessing the pollen thermotolerance of a