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Artigo

Expression of tea cytosolic glutamine synthetase is tissue specific and induced by cadmium and salt stress

Resumo

A glutamina sintetase (GS) apresentou maior expressão e atividade no broto (folha superior mais jovem) de Camellia sinensis, menor nas folhas mais velhas e menor atividade no caule e nas raízes. A expressão e a atividade da GS aumentaram com amônio e nitrato e também com cádmio e estresse salino, mas diminuíram com cobre, alumínio, seca, frio e estresse térmico.



Abstract

Glutamine synthetase (GS) showed highest expression and activity in bud (youngest topmost leaf) of Camellia sinensis, lower in older leaves, while lowest activity in stem and roots. GS expression and activity was increased by ammonium and nitrate and also by cadmium and salt stress but decreased by copper, aluminum, drought, cold and heat stress.



N. K. Rana
P. Mohanpuria
S. K. Yadav

2008 - Biologia Plantarum

Palavras-chave:

estresse abiótico, Camellia sinensis, estresse por metais, fonte de N

Termos de indexação:

Tolerância ao cadmio, tolerância a sal, regulação enzimática, metais pesados, nitrato, amônio, cobre, alumínio, estresse térmico

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