Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).
它可影响茎的向光
地生长。
物生长激素（auxin的复数）Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).
它可影响茎的向光地生长。
They work antagonistically with ABSCISIC ACID, and in some situations work cooperativedly with AUXINS as, for example, in the control of sex expression in dioecious plants.
如，在雌雄异株的物中控制别表达。
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