植物激素IAA,是植物生长发育的关键调节剂。经典的IAA信号传导机制在细胞核中起作用,并依赖于TIR1(TRANSPORT INHIBITOR RESPONSE 1)/ AFB(AUXIN-SIGNALING F-BOX)受体、Aux/IAA阻遏物和ARF(auxin response factor)转录调节因子,它们共同介导了生长发育重编程所需的全局性转录变化。虽然经典的IAA活性,如根系生长的调节,...
TIR1/AFB proteins act as auxin co-receptors during the signaling of nuclear auxins and play a primary role in development-related regulatory processes and responses to biotic and abiotic stresses. However, this gene family and itsmembers have not been explored in Pyrus genom...
Such long-distance auxin-signaling from the source to the target cell via transporters has helped advance our understanding of plant development as a holistic system. Here, we summarize recent achievements in the study of molecular and long-distance signaling mechanisms for auxin, and discuss their ...
Plant hormones play important role in plant immune signaling system. While salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) are integral components of signal transduction systems involved in activation of plant innate immunity, auxin is involve
Auxin brings together threeSCF subunits(F-box proteins, Skp, and Cul1 proteins) and TRANSPORT INHIBITOR RESPONSE1/AUXIN-SIGNALING F-BOX (TIR1/AFB) (Fig. 15.20). The last protein serves as acorepressorof the Aux/IAA, a complex that may also recruit TOPLESS (TPL) in the repression of the...
Organ size and shape are precisely regulated to ensure proper function. The four sepals in each Arabidopsis thaliana flower must maintain the same size throughout their growth to continuously enclose and protect the developing bud. Here we show that DEVE
et al. Small-molecule agonists and antagonists of F-box protein-substrate interactions in auxin perception and signaling. Proc. Natl Acad. Sci. USA 105, 5632–5637 (2008). Article ADS CAS Google Scholar Overvoorde, P. J. et al. Functional genomic analysis of the AUXIN/INDOLE-3-ACETIC ...
We found that disruption of auxin signaling in plants expressing an inducible dominant axr2-1 mutation resulted in decreased bacterial growth and that this phenotype was suppressed by introducing the sid2-2 mutation, which impairs SA synthesis. Thus, host auxin signaling is required for normal ...
( 2001 ) Auxin signaling involves regulated protein degradation by the ubiquitin-proteasome pathway . J. Plant Growth Regul. 20 , 265 – 273 .Sally PW,Mark E.Auxin signaling involves regulated protein degrada-tion by the ubiquitin-proteasome pathway. JPlant Growth Regul . 2001...
(ref.10). Of those domains, domain II, termed as the degron motif, is a key determinant of auxin-dependent degradation of Aux/IAAs by mediating interaction with the auxin receptors TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F-BOX PROTEINS (TIR1/AFBs). Genetic studies reveal that various ...