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991.
Shixin Li Zengshuai Yan Zhen Luo Yan Xu Fang Huang Xianren Zhang Xin Yi Tongtao Yue 《Biophysical journal》2019,116(5):884-892
Membrane nanotubes, also known as membrane tethers, play important functional roles in many cellular processes, such as trafficking and signaling. Although considerable progresses have been made in understanding the physics regulating the mechanical behaviors of individual membrane nanotubes, relatively little is known about the formation of multiple membrane nanotubes due to the rapid occurring process involving strong cooperative effects and complex configurational transitions. By exerting a pair of external extraction upon two separate membrane regions, here, we combine molecular dynamics simulations and theoretical analysis to investigate how the membrane nanotube formation and pulling behaviors are regulated by the separation between the pulling forces and how the membrane protrusions interact with each other. As the force separation increases, different membrane configurations are observed, including an individual tubular protrusion, a relatively less deformed protrusion with two nanotubes on its top forming a V shape, a Y-shaped configuration through nanotube coalescence via a zipper-like mechanism, and two weakly interacting tubular protrusions. The energy profile as a function of the separation is determined. Moreover, the directional flow of lipid molecules accompanying the membrane shape transition is analyzed. Our results provide new, to our knowledge, insights at a molecular level into the interaction between membrane protrusions and help in understanding the formation and evolution of intra- and intercellular membrane tubular networks involved in numerous cell activities. 相似文献
992.
Pumo Cai Yunzhe Song Chuandong Yi Qiwen Zhang Huimin Xia Jia Lin Hehe Zhang Jianquan Yang Qinge Ji Jiahua Chen 《Entomologia Experimentalis et Applicata》2019,167(10):880-890
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), the spotted wing drosophila, is a pest endemic to Southeast Asia that invaded the Americas and Europe in 2008. In contrast to most of its congeners, D. suzukii possesses a serrated ovipositor that allows it to lay eggs in unwounded commercial fruits, resulting in severe revenue losses for the industry. The purpose of this study was to determine the susceptibility of known host fruits, including cherry, strawberry, blueberry, and grape, and potential host fruits, such as banana and apple, to attack by D. suzukii. Based on the responses to volatile cues offered in a six‐choice olfactometer, the preference of female D. suzukii was ranked in the following order: strawberry = cherry > banana = apple = blueberry = grape, but in no‐choice and choice oviposition tests, the preferences were ranked as follows: cherry > strawberry = blueberry > grape = banana > apple. Furthermore, we reconfirmed that D. suzukii mainly targets rotten fruit for feeding and ripe fruit for oviposition, and females preferred fruits with intensive mechanical damage. Based on developmental parameters, apple was the least suitable host. This study has implications for the control of D. suzukii, especially in mixed fruit orchards, by providing a promising avenue for exploiting behaviour‐based control tools and emphasizing the importance of phenology in host fruit susceptibility. 相似文献
993.
Plant and Soil - Improving our understanding of ecosystem responses to land-use intensification requires explicit consideration of linkages between aboveground and belowground communities. Here, we... 相似文献
994.
Luo Wentao Zuo Xiaoan Griffin-Nolan Robert J. Xu Chong Ma Wang Song Lin Helsen Kenny Lin Yingchao Cai Jiangping Yu Qiang Wang Zhengwen Smith Melinda D. Han Xingguo Knapp Alan K. 《Plant and Soil》2019,434(1-2):343-361
Plant and Soil - Mechanisms by which soil pH affects rice growth await further elucidation. We have used a Systems Biology approach to elucidate the nature of the damage caused by extreme pH to... 相似文献
995.
Plant and Soil - Iron plaque at the soil-root interface is a key position for uptake of heavy metals by plants. Exploring iron plaque’s role in Pb uptake by edible vegetable roots aids... 相似文献
996.
Han Chao Ren Jinghua Williams Paul N. Ke Fan Shen Qiushi Wang Zhaode Xu Di Luo Jun 《Plant and Soil》2019,441(1-2):613-627
Plant and Soil - Radial oxygen loss (ROL) for macrophytes is intimately involved in their survival and growth, thus detailed characterizations of ROL and its implication for geochemical processes... 相似文献
997.
Plant and Soil - Nebkhas, discrete sand mounds formed with a plant, are a common landscape feature critical to the stability of desert ecosystems. However, adaptations which allow plants to thrive... 相似文献
998.
999.
Plant Molecular Biology - Plant defensin AtPDF2.6 is not secreted to the apoplast and localized in cytoplasm. AtPDF2.6 is mainly expressed in root vascular bundles of xylem parenchyma cell, and... 相似文献
1000.
Jiang Xue-ru Ren Rui-fen Di Wei Jia Meng-xue Li Ze-di Liu Yan Gao Rong-fu 《Plant Cell, Tissue and Organ Culture》2019,137(3):553-563
Plant Cell, Tissue and Organ Culture (PCTOC) - Programmed cell death (PCD) plays a key role in animal tissue cell death following cryopreservation. However, there are few studies evaluating the... 相似文献