2022
MEDIATOR SUBUNIT17 integrates jasmonate and auxin signaling pathways to regulate thermomorphogenesis
AGRAWAL, Rekha, Mohan SHARMA, Nidhi DWIVEDI, Sourobh MAJI, Pallabi THAKUR et. al.Základní údaje
Originální název
MEDIATOR SUBUNIT17 integrates jasmonate and auxin signaling pathways to regulate thermomorphogenesis
Autoři
AGRAWAL, Rekha, Mohan SHARMA, Nidhi DWIVEDI, Sourobh MAJI, Pallabi THAKUR, Alim JUNAID, Jiří FAJKUS (203 Česká republika, domácí), Ashverya LAXMI a Jitendra K. THAKUR
Vydání
Plant Physiology, American Society of Plant Physiologists, 2022, 0032-0889
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 7.400
Organizační jednotka
Středoevropský technologický institut
UT WoS
000798061700001
Klíčová slova anglicky
TRANSCRIPTIONAL REGULATION; HISTONE MODIFICATIONS; PLANT MEDIATOR; SALICYLIC-ACID; ARABIDOPSIS; COMPLEX; PHYTOCHROME; BHLH; MYC2; EXPRESSION
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 9. 7. 2024 14:48, Mgr. Marie Šípková, DiS.
Anotace
V originále
Plant adjustment to environmental changes involves complex crosstalk between extrinsic and intrinsic cues. In the past two decades, extensive research has elucidated the key roles of PHYTOCHROME-INTERACTING FACTOR4 (PIF4) and the phytohormone auxin in thermomorphogenesis. In this study, we identified a previously unexplored role of jasmonate (JA) signaling components, the Mediator complex, and their integration with auxin signaling during thermomorphogenesis in Arabidopsis (Arabidopsis thaliana). Warm temperature induces expression of JA signaling genes including MYC2, but, surprisingly, this transcriptional activation is not JA dependent. Warm temperature also promotes accumulation of the JA signaling receptor CORONATINE INSENSITIVE1 (COI1) and degradation of the JA signaling repressor JASMONATE-ZIM-DOMAIN PROTEIN9, which probably leads to de-repression of MYC2, enabling it to contribute to the expression of MEDIATOR SUBUNIT17 (MED17). In response to warm temperature, MED17 occupies the promoters of thermosensory genes including PIF4, YUCCA8 (YUC8), INDOLE-3-ACETIC ACID INDUCIBLE19 (IAA19), and IAA29. Moreover, MED17 facilitates enrichment of H3K4me3 on the promoters of PIF4, YUC8, IAA19, and IAA29 genes. Interestingly, both occupancy of MED17 and enrichment of H3K4me3 on these thermomorphogenesis-related promoters are dependent on PIF4 (or PIFs). Altered accumulation of COI1 under warm temperature in the med17 mutant suggests the possibility of a feedback mechanism. Overall, this study reveals the role of the Mediator complex as an integrator of JA and auxin signaling pathways during thermomorphogenesis.
Návaznosti
EF16_026/0008446, projekt VaV |
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LTC20003, projekt VaV |
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