Effects of anti-auxins on secondary aerenchyma formation in flooded soybean hypocotyls

Effects of anti-auxins on secondary aerenchyma formation in flooded soybean hypocotyls
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抗生长素对水淹大豆下胚轴次生通气组织形成的影响

DOI:
10.1080/1343943x.2015.1128101
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发表时间:
2016
影响因子:
2.5
通讯作者:
Setsuko Komatsu
Setsuko Komatsu
中科院分区:
农林科学3区
文献类型:
--
作者:
Satoshi Shimamura;Takeshi Nishimura;Tomokazu Koshiba;Ryo Yamamoto;Susumu Hiraga;Takuji Nakamura;Setsuko Komatsu

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大豆淹水下胚轴(Glycine max)中,木栓内的细胞分裂和细胞伸长加快,从而产生气孔率高的次生通气组织。在许多植物中,生长素控制着细胞分裂和细胞伸长,因此我们研究了生长素在次生通气组织发育中的作用。用7种抗生长素溶液(各100 μM)浸泡具有完全展开单叶的大豆植株6 d。TIBA、NPA、HFCA、1-NOA和CHPAA对继发性通气组织的形成没有抑制作用,而MH对通气组织的发育有中度抑制作用,PCIB对木栓和继发性通气组织的发育有较强的抑制作用。然而,淹水下胚轴内的内源IAA浓度直到72 h时才相对于对照增加或减少,此时观察到二次通气。从这些结果来看,生长素是否在淹水条件下次生通气组织形成过程中起重要作用尚不清楚。
In flooded hypocotyl of soybean (Glycine max), cell division in phellogen and the elongation of these cells are enhanced, and thereby a secondary aerenchyma with high porosity is produced. Auxin controls cell division and cell elongation in many plants, so we studied its role in secondary aerenchyma development. Soybean plants with fully expanded unifoliolate leaves were flooded for 6 d with solutions (100 μM each) of seven anti-auxins. TIBA, NPA, HFCA, 1-NOA, or CHPAA did not restrict the secondary aerenchyma formation, while MH moderately suppressed the aerenchyma development, and PCIB strongly inhibited the development of phellogen and secondary aerenchyma. However, the endogenous IAA concentrations in the flooded hypocotyls did not increase or decrease relative to the controls until 72 h, when a secondary aerenchyma was observed. From these results, it is unclear whether auxin plays an important role in the process of secondary aerenchyma formation under flooding.
DOI: --
发表时间: 2007
期刊: --
影响因子: --
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抗生长素与根部生长素的生理相互作用。
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