In:
Frontiers in Plant Science, Frontiers Media SA, Vol. 13 ( 2022-4-11)
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 35S:nahG tomato line, which has low SA levels. We found that reducing the SA level resulted in increased pollen viability of plants grown in LTMH and further characterized this line by transcriptome, carbohydrate, and hormone analyses. Low expression of JAZ genes in 35S:nahG and LTMH hypersensitivity of low-jasmonic acid (JA) genotypes together suggest that the increased pollen thermotolerance in the low-SA line involves enhanced JA signal in developing anthers in LTMH. These findings have potential application in the development of more thermotolerant crops.
Type of Medium:
Online Resource
ISSN:
1664-462X
DOI:
10.3389/fpls.2022.828743
DOI:
10.3389/fpls.2022.828743.s001
DOI:
10.3389/fpls.2022.828743.s002
DOI:
10.3389/fpls.2022.828743.s003
DOI:
10.3389/fpls.2022.828743.s004
DOI:
10.3389/fpls.2022.828743.s005
DOI:
10.3389/fpls.2022.828743.s006
DOI:
10.3389/fpls.2022.828743.s007
DOI:
10.3389/fpls.2022.828743.s008
DOI:
10.3389/fpls.2022.828743.s009
DOI:
10.3389/fpls.2022.828743.s010
DOI:
10.3389/fpls.2022.828743.s011
DOI:
10.3389/fpls.2022.828743.s012
DOI:
10.3389/fpls.2022.828743.s013
DOI:
10.3389/fpls.2022.828743.s014
DOI:
10.3389/fpls.2022.828743.s015
DOI:
10.3389/fpls.2022.828743.s016
DOI:
10.3389/fpls.2022.828743.s017
DOI:
10.3389/fpls.2022.828743.s018
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2022
detail.hit.zdb_id:
2687947-5
detail.hit.zdb_id:
2613694-6
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