英语翻译Cucumber (Cucumis sativus L.) is a monoecious plant in which female sex expression (gynoecy) is controlled by the Female (F) locus that can be modified by other sexdetermining genes as well as by environmental and hormonal factors.As in m

英语翻译Cucumber (Cucumis sativus L.) is a monoecious plant in which female sex expression (gynoecy) is controlled by the Female (F) locus that can be modified by other sexdetermining genes as well as by environmental and hormonal factors.As in m
英语翻译
Cucumber (Cucumis sativus L.) is a monoecious plant in which female sex expression (gynoecy) is controlled by the Female (F) locus that can be modified by other sexdetermining genes as well as by environmental and hormonal factors.As in many other cucurbits,ethylene is the major plant hormone regulating female sex expression.Previously we isolated the Cs-ACS1 (ACS,1-aminocyclopropane-1-carboxylate synthase) gene that encodes the rate-limiting enzyme in the ethylene biosynthetic pathway.We proposed that Cs-ACS1 is present in a single copy in monoecious (ffMM) plants whereas gynoecious plants (FFMM) contain an additional copy Cs-ACS1G that was mapped to the F locus.To study the origin of Cs-ACS1G,we cloned and analyzed both the gynoecious-specific Cs-ACS1G gene and the non-sex-specific Cs-ACS1 gene.Our results indicate that Cs-ACS1G is the result of a relatively recent gene duplication and recombination,between Cs-ACS1 and a branched-chain amino acid transaminase (BCAT) gene.Taking into consideration that the Cs-ACS1G gene was mapped to the F locus,we propose that this duplication event gave rise to the F locus and to gynoecious cucumber plants.Computer analysis of the 1 kb region upstream of the transcription initiation site revealed several putative cisacting regulatory elements that can potentially confer the responsiveness of Cs-ACS1G to developmental and hormonal factors and thereby control female sex determination in cucumber.These findings lead us to a model explaining the action of Cs-ACS1 and Cs-ACS1G in cucumber floral sex determination.

英语翻译Cucumber (Cucumis sativus L.) is a monoecious plant in which female sex expression (gynoecy) is controlled by the Female (F) locus that can be modified by other sexdetermining genes as well as by environmental and hormonal factors.As in m
黄瓜（黄瓜）是雌雄同株植物,其中女性的表达（gynoecy）是由女性（女）控制的轨迹,可以被其他sexdetermining基因改性以及环境和荷尔蒙因素.正如在许多其他瓜类,乙烯是重要的植物激素调节女性的表现.以前我们分离出铯ACS1（加勒比国家联盟,
1 -氨基环丙烷-1羧酸合成酶）基因编码的限速酶在乙烯生物合成途径.我们建议,铯ACS1是在雌雄同株（ffMM单拷贝至今）,而（FFMM）雌性植物植物含有额外拷贝铯ACS1G这是映射到的F基因.研究
起源铯ACS1G,克隆和分析,我们既雌性具体铯ACS1G基因和非性别特异性铯ACS1基因.我们的结果表明,铯ACS1G是一个比较近期的基因复制和重组的结果,与铯ACS1
和支链氨基酸转氨酶（BCAT）基因.考虑到该铯ACS1G基因被映射到的F轨迹,我们建议,这种重复的事件引起的F基因和雌性黄瓜植株.计算机的上游转录起始位点1 kb的区域分析显示了一些公认的顺式作用调节元件是有可能赋予CS的反应,ACS1G的发展和荷尔蒙的因素,从而控制黄瓜女性的决心.这些发现使我们的模型解释铯行动ACS1和铯在黄瓜花性别决定ACS1G.