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090 _aB-19819
245 1 0 _aBending to auxin: fast acid growth for tropisms
490 0 _vTrends in Plant Science, 27(5), p.440-449, 2022
520 3 _aThe phytohormone auxin is the major growth regulator governing tropic responses including gravitropism. Auxin build-up at the lower side of stimulated shoots promotes cell expansion, whereas in roots it inhibits growth, leading to upward shoot bending and downward root bending, respectively. Yet it remains an enigma how the same signal can trigger such opposite cellular responses. In this review, we discuss several recent unexpected insights into the mechanisms underlying auxin regulation of growth, challenging several existing models. We focus on the divergent mechanisms of apoplastic pH regulation in shoots and roots revisiting the classical Acid Growth Theory and discuss coordinated involvement of multiple auxin signaling pathways. From this emerges a more comprehensive, updated picture how auxin regulates growth.
650 1 4 _aACID GROWTH THEORY
650 1 4 _aPM H(+)-ATPASE
650 1 4 _aTIR1/AFB
650 1 4 _aTMK1
650 1 4 _aAUXIN SIGNALING
650 1 4 _aCELL GROWTH
700 1 2 _aLi, L.
700 1 2 _aGallei, M.
700 1 2 _aFriml, J.
856 4 0 _uhttps://drive.google.com/file/d/1CUmPdFX_Ip_tN-Sz_XGVrG_S57Oc9qFJ/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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