J 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
Název: Integrace signálu a epigenetické reprogramování pro produktivitu rostlin
LTC20003, projekt VaV
Název: Dynamics of telomeres and rDNA loci in plant cell nuclei
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Dynamics of telomeres and rDNA loci in plant cell nuclei, INTER-COST