The geotropism growth was a response of hypha to gravity and the geotropic sensitive was at the hyphal apex.
试验证明：丛枝菌根真菌菌丝延伸生长部位
菌丝尖端，其生长的向
性
心引力的感应，感应的敏感部位也在生长菌丝的尖端。
性,屈性
词心引力;The geotropism growth was a response of hypha to gravity and the geotropic sensitive was at the hyphal apex.
试验证明：丛枝菌根真菌菌丝延伸生长部位菌丝尖端，其生长的向性心引力的感应，感应的敏感部位也在生长菌丝的尖端。
Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).
它可影响茎的向光性和背性生长。
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