【摘 要】
：
Ascorbate acid (AsA) is an important antioxidant in plants,playing important roles in various plant physiological processes.In tomato,only a few genes involved in ascorbate metabolism have been cloned
【机 构】
：
Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural Universi
【出 处】
：
2011 International Workshop on Biology of Fruit Quality (首届果
论文部分内容阅读
Ascorbate acid (AsA) is an important antioxidant in plants,playing important roles in various plant physiological processes.In tomato,only a few genes involved in ascorbate metabolism have been cloned and identified,and little is known about ascorbate regulation especially in fruit.In this study,genes related to ascorbate biosynthesis and metablism were cloned from tomato.GME (SLGMEL and SLGME2) and SlGMP were constitutively expressed in roots,stems,leaves,flowers and fruits with various levels.Over-expressing SLGME1 and SLGME2 exhibited a significant increase in total ascorbic acid in leaves and red fruits of transgenic tomato plants compared with the wild-type,whereas the total ascorbate content in leaves and breaker fruit decreased remarkably in S1GME2 co-suppression transgenic lines.
其他文献
以东方百合品种Siberia为材料,研究休眠解除后延长冰冻冷藏时间对百合生长发育的影响,通过比较不同处理对百合叶片数和花苞数的影响,及花芽分化的细胞学观察,进而了解百合种球在长时间低温冷冻环境下的生长变化.结果表明:百合种球休眠打破后,在-1.5℃温度条件下继续延长冰冻冷藏1～4个月未对生长发育造成影响,植株长势旺盛,A级花成花率在90％以上.在延长冰冻冷藏5个月时,开始出现生长抑制现象,6～7个
选择OT百合系列的品种康伽德奥、罗宾娜及耶罗琳为试材,研究百合连茬种植时基质对其植株高度、茎粗及叶绿素含量的影响.结果表明:种植在草炭土的康伽德奥、罗宾娜及耶罗琳第一茬和第二茬差异很小;种植在园土中的康伽德奥第二茬无论是植株高度、茎粗及叶绿素含量与种植在草炭土中的第二茬都有差异,尤其是叶绿素含量低一倍多(32.2SPAD);罗宾娜种植在园土中第二茬要比种植在草炭土中的第二茬植株高出9.9cm;而耶
通过对百合生理性烧叶形成的原因进行分析,找到了百合形成生理性烧叶的根本原因——百合幼叶组织缺钙.本文同时提出了一些防止和减轻叶烧的技术措施.对百合烧叶采取如下措施：改善通风条件，增加植株水分蒸腾；增加光照，提前打开遮阴网；促进根系生长，避免烧根；保持植株叶面干燥，避免植株上长时间积水；增施含钙肥料等。
本文以东方百合和OT杂种系百合试管鳞茎为试材,研究了百合试管鳞茎生长特性及栽培技术.试验结果表明,不同栽培模式下试管鳞茎生长特性有较大差异;不同品种试管鳞茎抽茎率和鳞茎周径差异较大;延长低温处理时间可促进出苗和茎的形成;泥炭和珍珠岩(7∶3)混合物作栽培介质有利改善通气和排水条件,适合百合试管鳞茎的生长.
用三年时间在浙江省农科院三位专家的指导下,对浙江省景宁县英川、景南、东坑等山区的百合真菌性、细菌性、病毒性、生理性病害与根螨进行了系统调查,结果表明:浙江省景宁县百合生产过程中有真菌性、细菌性、病毒性、生理性及线虫病与根螨等共21种病害,其中真菌性病害8种,细菌性病害1种,病毒病1种,根螨1种,生理性病害10种.以真菌性病害最为普遍且严重.本文还针对这些病害提出了一些防治措施.
对唐菖蒲试管苗和大田苗叶片解剖结构进行观察研究.结果表明:试管苗与大田苗叶片的解剖结构存在明显差异,试管苗叶片厚度、中脉厚度,以及叶肉组织厚度与上下表皮厚度明显薄于大田生长的叶片,试管苗表皮细胞较小,排列也比较松散,其细胞间隙较大、叶片维管组织分化无大田苗叶片明显.
9-顺式-环氧类胡萝卜素双氧合酶(Nine-cis-epoxycarotenoid dioxygenase,NCED)是脱落酸(Abscisic acid,ABA)生物合成途径中的一个关键酶.通过RT-PCR和RACE技术克隆到了唐菖蒲(Gladio lus hybridus)品种Rose Supreme球茎中一个全长为2496bp的NCED基因的cDNA序列,命名为GhNCED.该序列含有一个1
Fruit senescence is a vital aspect affecting quality and storage life and has been reported to be an oxidative phenomenon,but the detailed mechanisms by which reactive oxygen species (ROS) regulate th
Virus-induced gene silencing (VIGS) is a powerful tool for the study of gene function in plants.Here we report that by syringe-infiltrating the tobacco rattle virus (TRV)-vector into the carpopodium o
Fruit softening is generally attributed to cell wall disassembly.Alcohol-insoluble residues (AIRs) from banana fruit at five ripening stages were extracted and isolated.The AIR was fractionated with 1