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221.
温、湿度对亚洲玉米螟成虫繁殖力及寿命的影响 总被引:10,自引:0,他引:10
温度和湿度的变化对亚洲玉米螟0strinia furnacalis(Guenee)成虫的交配和产卵及寿命都具有极显著的影响。在16℃~32℃和RH20%~100%的温湿范围中,亚洲玉米螟成虫繁殖力在20℃~28℃恒温和RH70%~100%的温湿组合中较大,其中在24℃恒温和28℃~20℃变温与RH90%~100%的组合中为最大,在32℃和RH20%的组合中为最小。单雌抱卵量、产卵量和产出卵率及交配次数均与温度呈抛物线曲线关系,与湿度呈正相关。温、湿度对成虫繁殖力具有极显著的交互作用。成虫寿命与温湿度密切相关,温度越高,成虫寿命越短;而湿度越高,成虫寿命越长。但雄蛾比雌蛾较耐低湿,在16℃~24℃下雄蛾寿命比雌蛾较长。此外,雄蛾较强的交配能力可促进卵的发育和产出。以上结果对玉米螟种群动态消长的分析和预测预报提供了参考依据。 相似文献
222.
人降钙素基因相关肽转基因马铃薯的RT-PCR分析 总被引:3,自引:0,他引:3
报道经过农杆菌介导将人降钙素基因相关肽(calcitoningenerelatedpeptide,CGRP)基因由马铃薯块茎专一表达classIpatatin基因5′侧翼区和CaMV35S启动子驱动构建的马铃薯表达载体导入马铃薯,PCR鉴定获得了转基因植株。RTPCR分析证实classIpatatin基因5′侧翼区驱动的CGRPmRNA在转基因马铃薯中的表达。研究结果在开发转基因马铃薯生物反应器表达医用多肽中具有重要意义。 相似文献
223.
Interaction of Par-6 and Crumbs complexes is essential for photoreceptor morphogenesis in Drosophila
Apicobasal cell polarity is crucial for morphogenesis of photoreceptor rhabdomeres and adherens junctions (AJs) in the Drosophila eye. Crumbs (Crb) is specifically localized to the apical membrane of photoreceptors, providing a positional cue for the organization of rhabdomeres and AJs. We show that the Crb complex consisting of Crb, Stardust (Sdt) and Discs-lost (Dlt) colocalizes with another protein complex containing Par-6 and atypical protein kinase C (aPKC) in the rhabdomere stalk of photoreceptors. Loss of each component of the Crb complex causes age-dependent mislocalization of Par-6 complex proteins, and ectopic expression of Crb intracellular domain is sufficient to recruit the Par-6 complex. We also show that the absence of Par-6 complex proteins results in severe mislocalization and loss of Crb complex. We further demonstrate that Dlt directly binds to Par-6, providing a molecular basis for the mutual dependence of the two complexes. These results suggest that the interaction of Crb and Par-6 complexes is required for the organization and maintenance of apical membranes and AJs of photoreceptors. 相似文献
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226.
Alzheimer’s disease (AD) is characterized by an excessive accumulation of toxic amyloid beta (Aβ) plaques and memory dysfunction. The onset of AD is influenced by age, genetic background, and impaired glucose metabolism in the brain. Several studies have demonstrated that diabetes involving insulin resistance and glucose tolerance could lead to AD, ultimately resulting in cognitive dysfunction. Even though the relationship between diabetes and AD was indicated by significant evidences, the critical mechanisms and metabolic alterations in diabetes induced AD are not clear until now. Recently, iron metabolism has been shown to play multiple roles in the central nervous system (CNS). Iron deficiency and overload are associated with neurodegenerative diseases. Iron binds to Aβ and subsequently regulates Aβ toxicity in the CNS. In addition, previous studies have shown that iron is involved in the aggravation of insulin resistance. Considering these effects of iron metabolism in CNS, we expect that iron metabolism may play crucial roles in diabetic AD brain. Thus, we review the recent evidence regarding the relationship between diabetes-induced AD and iron metabolism. 相似文献
227.
Tianyu Yu Bin Liu Zhigang He Muqing Yang Jian Song Cheng Ma Sunqiang Ma Junlan Feng Xiaodong Wang Jiyu Li 《In vitro cellular & developmental biology. Animal》2018,54(10):705-714
Mast cells (MCs) are responsible for the innate immune response. Rat MCs are more suitable than mouse MCs as models of specific parasite infection processes and ovalbumin-induced asthma. Rat peritoneum-derived MCs and RBL-2H3 cells (an MC cell line) are widely used in disease studies. However, the application of rat bone marrow-derived MCs (BMMCs) are poorly documented in terms of the methodology of rat BMMC isolation. Here, we describe a relatively rapid, efficient, and simple method for the cultivation of rat BMMCs. As compared to previous protocols, rat BMMCs produced with the proposed protocol exhibited advantages in differentiation, proliferation, lifespan, and functionality, which should prove useful for studies of mucosal MC diseases in specific rat models. 相似文献
228.
培土栽培对麻竹笋品质的影响机理研究 总被引:1,自引:0,他引:1
为了评价不同栽培模式对麻竹笋品质影响,提高竹林经济效益,采用培土栽培和不培土栽培两种方式,通过研究麻竹笋外观形态、营养物质、呈味物质及氨基酸含量,分析了不同培土栽培对麻竹笋品质的影响。结果表明:(1)培土栽培的麻竹笋个体重量、基茎、长度及可食率较不培土栽培竹笋分别显著提高了28.09%、12.76%、19.61%、23.53%,箨壁厚度显著降低了46.43%。(2)培土栽培的麻竹笋灰分、蛋白质、脂肪及淀粉含量较不培土栽培竹笋分别显著下降了10.08%、12.77%、26.09%、48.84%,而还原糖、可溶性糖、水分及维生素C含量均不同程度增加。(3)培土栽培的麻竹笋单宁、草酸、纤维素、木质素含量较不培土栽培竹笋分别下降26.32%、20.26%、39.12%、25.47%。(4)培土栽培的麻竹笋氨基酸总量较不培土栽培竹笋显著增加了26.08%,其中的苦味、芳香类和鲜味氨基酸含量占比均下降,但甜味氨基酸占比则显著上升。研究发现,培土栽培可以改善麻竹笋外观形态,同时增加竹笋甜味、减少粗糙度和酸涩味,从而使竹笋品质得到明显提升。 相似文献
229.
Mohd-Hairul Ab Rahim Ong-Abdullah Janna Song Adelene Ai-Lian Foo Hooi Ling Namasivayam Parameswari Rahim Raha Abdul 《Journal of plant biochemistry and biotechnology.》2022,31(4):965-968
Journal of Plant Biochemistry and Biotechnology - Vandachostylis ‘Sri-Siam’ is a fragrant orchid, suitable as a potted plant for the floriculture and perfumery industries due to its... 相似文献
230.
Chuncheng Lu Miaofei Xu Ying Wang Yufeng Qin Guizhen Du Wei Wu Xiumei Han Chao Ji Yanli Yang Aihua Gu Yankai Xia Ling Song Shoulin Wang Xinru Wang 《PloS one》2013,8(1)