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Plant RABs: Role in Development and in Abiotic and Biotic Stress Responses

[ Vol. 22 , Issue. 1 ]

Author(s):

Manas K. Tripathy*, Renu Deswal and Sudhir K. Sopory   Pages 26 - 40 ( 15 )

Abstract:


Endosomal trafficking plays an integral role in various eukaryotic cellular activities and is vital for higher-order functions in multicellular organisms. RAB GTPases are important proteins that influence various aspects of membrane traffic, which consequently influence many cellular functions and responses. Compared to yeast and mammals, plants have evolved a unique set of plant-specific RABs that play a significant role in their development. RABs form the largest family of small guanosine triphosphate (GTP)-binding proteins, and are divided into eight sub-families named RAB1, RAB2, RAB5, RAB6, RAB7, RAB8, RAB11 and RAB18. Recent studies on different species suggest that RAB proteins play crucial roles in intracellular trafficking and cytokinesis, in autophagy, plant microbe interactions and in biotic and abiotic stress responses. This review recaptures and summarizes the roles of RABs in plant cell functions and in enhancing plant survival under stress conditions.

Keywords:

Abiotic stress, biotic stress, GTP binding protein, RAB, Guanosine triphosphate, vesicle trafficking.

Affiliation:

International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, Department of Botany, University of Delhi, Delhi 110007, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067

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