Comparative study of the protein profiles of Sunki mandarin and Rangpur lime plants in response to water déficit.

Rootstocks play a major role in the tolerance of citrus plants to water deficit by controlling and adjusting the water supply to meet the transpiration demand of the shoots. Alterations in protein abundance in citrus roots are crucial for plant adaptation to water deficit. We performed two-dimensional electrophoresis (2-DE) separation followed by LC/MS/MS to assess the proteome responses of the roots of two citrus rootstocks, Rangpur lime (Citrus limonia Osbeck) and ?Sunki Maravilha? (Citrus sunki) mandarin, which show contrasting tolerances to water deficits at the physiological and molecular levels