热带作物学报2012，Vol.33Issue(9)：1647-1653,7.DOI:10.3969/j.issn.1000-2561.2012.09.022
外源JA的移动对巴西橡胶树萌条次生乳管分化的诱导效应
Effect on the Induction of the Secondary Laticifer Differentiation by the Transportation of Exogenous JA in Hevea brasiliensis
摘要
Abstract
By using iodine-bromine dyeing and paraffin section techniques, the effect of the transportation of exogenous JA (jasmonic acid)on inducing the secondary latcicifer differentiation in epicormic shoot of Hevea brasiliensis was revealed. The results showed that no secondary laticifer differentiated in the first and second foliage clusters under natural conditions while a row of secondary laticifers appeared in the bark of the first foliage cluster 40 d after being treated with 0.07% JA. Meanwhile, the secondary laticifers were present in the bark of the sites 10 cm and 5 cm up and down from the treated site as well as in the bark of the next foliage cluster respectively. The secondary laticifers in different sites were of similar size and uniform distance far from the cambia region, suggesting that these laticifers differentiated at the same period and induced by the transportation of JA. The effect of JA application on several foliage clusters of a single shoot at the same time was much stronger than those treated separately, implying the effect of mobile JA on the induction of the secondary laticifer had the dose -effect and the superimpose dose. This study had provided the basis for lucubrating the signal transduction of JA and the mechanism of laticifer differentiation in rubber tree.关键词
巴西橡胶树/茉莉酸/乳管分化Key words
Hevea brasiliensis/ Jasmonic acid(JA)/ Laticifer differentiation分类
农业科技引用本文复制引用
史敏晶,田维敏..外源JA的移动对巴西橡胶树萌条次生乳管分化的诱导效应[J].热带作物学报,2012,33(9):1647-1653,7.基金项目
国家自然科学基金项目(No.31070535) （No.31070535）
国家天然橡胶产业技术体系专项资金(CARS-34-GW1). （CARS-34-GW1）
