Effects of extracellular ATP on the growth of Arabidopsis thaliana
To further understand whether plant growth and development were also regulated by extracellu-lar ATP(exATP),we investigated the effects of exATP on the growth of Arabidopsis thaliana,by using plant exATP receptor mutants(dorn 1-3,in which the T-DNA disrupted the gene encoding the plant exATP receptor DORN1)and exogenous ATP.The results showed that the DORN1 mutation significantly increased the root length,leaf area and fresh weight of aboveground parts of Arabidopsis plants,whereas the application of exogenous ATP suppressed the root length,hypocotyl length,root hair number,leaf area,fresh weight of aboveground parts,and dry weight of Arabidopsis.The exogenous ATP or DORN1 mutation also exerted some effects,to some extent,on the inflorescence height,thousand-grain weight and pod number in Arabidopsis.These observations indicated that exATP could be involved in the regula-tion of plant growth.
万方数据
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