水分胁迫下离体烟叶中脂氧合酶活性与脱落酸积累的关系

JOURNAL OF HUAZHONG AGRICULTURAL UNIVERSITY(2002)

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Abstract
采用河南农业大学设计的电热式温湿度自控烤烟箱,研究了水分胁迫离体烟叶中脂氧合酶(LOX)活性与脱落酸(ABA)积累的关系.结果表明,水分胁迫下ABA积累的同时,LOX活性也上升,二者相关性达5%的显著水平;LOX专-抑制剂去甲二氢菊木酸(NDGA)在抑制LOX活性的同时也阻断了ABA的积累;无细胞体系加入LOX可直接引起ABA的积累.这表明LOX很可能是生物合成及胁迫诱导ABA积累的一个关键酶.
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