In:
PLOS Genetics, Public Library of Science (PLoS), Vol. 19, No. 3 ( 2023-3-1), p. e1010636-
Abstract:
Plants can regenerate new organs from damaged or detached tissues. In the process of de novo root regeneration (DNRR), adventitious roots are frequently formed from the wound site on a detached leaf. Salicylic acid (SA) is a key phytohormone regulating plant defenses and stress responses. The role of SA and its acting mechanisms during de novo organogenesis is still unclear. Here, we found that endogenous SA inhibited the adventitious root formation after cutting. Free SA rapidly accumulated at the wound site, which was accompanied by an activation of SA response. SA receptors NPR3 and NPR4, but not NPR1, were required for DNRR. Wounding-elevated SA compromised the expression of AUX1, and subsequent transport of auxin to the wound site. A mutation in AUX1 abolished the enhanced DNRR in low SA mutants. Our work elucidates a role of SA in regulating DNRR and suggests a potential link between biotic stress and tissue regeneration.
Type of Medium:
Online Resource
ISSN:
1553-7404
DOI:
10.1371/journal.pgen.1010636
DOI:
10.1371/journal.pgen.1010636.g001
DOI:
10.1371/journal.pgen.1010636.g002
DOI:
10.1371/journal.pgen.1010636.g003
DOI:
10.1371/journal.pgen.1010636.g004
DOI:
10.1371/journal.pgen.1010636.g005
DOI:
10.1371/journal.pgen.1010636.g006
DOI:
10.1371/journal.pgen.1010636.s001
DOI:
10.1371/journal.pgen.1010636.s002
DOI:
10.1371/journal.pgen.1010636.s003
DOI:
10.1371/journal.pgen.1010636.s004
DOI:
10.1371/journal.pgen.1010636.s005
DOI:
10.1371/journal.pgen.1010636.s006
DOI:
10.1371/journal.pgen.1010636.s007
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2186725-2
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