Results 21 to 30 of about 16,972 (152)
Reactive oxygen species act as signaling molecules to control root hair initiation and tip growth
New Phytologist, Volume 247, Issue 5, Page 2042-2048, September 2025.Summary Root hairs (RHs) increase the surface area of roots, facilitating nutrient and water uptake and plant anchorage. RHs form from root epidermal cells and elongate by polar tip growth. Reactive oxygen species (ROS) have recently been implicated as important signals that drive RH formation and elongation using both genetic and imaging approaches ...
Megan E. Gerber +2 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 8, Page 2149-2169, August 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plants assemble beneficial rhizosphere microbiomes through a ‘cry for help’ mechanism upon pathogen or insect herbivore attack. The arbuscular mycorrhizal fungi (AMF) can influence the composition of microbial communities in the plant rhizosphere. However, their impacts
Yingde Li +6 more
wiley +1 more source
Veterinary Dermatology, Volume 36, Issue 3, Page 302-313, June 2025.Background – Malassezia pachydermatis (MP) is implicated in severe dermatitis and otitis externa (OE) of companion animals and recently gained attention for its increasing resistance to azole compounds. For this reason, developing novel therapeutic strategies is of great interest. In a previous work, we used reference yeast isolates to evaluate several
Costanza Spadini +11 more
wiley +1 more source
Screening and Cloning the Heavy Metal Tolerance-associated Genes in Avicennia marina (Forsk.) under Cadmium stress by Suppression Subtractive Hybridization [PDF]
, 2015 白骨壤(Avicenniamarina)作为红树林的先锋树种，广泛分布于海岸河口的低潮带，其独特的生物学和生态学特性为探索红树植物对重金属耐受性的分子机理提供了最佳的研究对象。红树林生态系统虽然承受大量重金属污染物胁迫，但对重金属污染物却表现出很强的耐受性和抗性，其中白骨壤对重金属的耐受性较其他红树植物更为突出。本研究以红树植物白骨壤为材料，研究重金属污染物镉(Cadmium)胁迫下的白骨壤幼苗基因表达差异，寻找与重金属耐受性相关的候选基因，并为红树植物的基因组研究建立相关的基因文库 ...
张骥诚
core
Shuitu Baochi Xuebao, 2008 对松嫩平原西部退化盐碱草地土壤过氧化氢酶、过氧化物酶、多酚氧化酶、蛋白酶、转化酶及碱性磷酸酶活性的季节动态进行研究,结果表明:土壤过氧化物酶、蛋白酶和转化酶活性在碱斑及不同退化程度盐碱草地中的季节变化趋势不同,而过氧化氢酶、多酚氧化酶和碱性磷酸酶活性的季节变化趋势基本一致,其峰值出现在8月或9月;在不同退化程度的盐碱草地中,各种酶活性的季节变化幅度不同,过氧化氢酶、多酚氧化酶和碱性磷酸酶活性在中度、重度盐碱化草地中的变化幅度大于轻度盐碱化草地,而过氧化物酶、蛋白酶和转化酶活性在中度 ...
YUE, WANG, WANG, YAN
doaj
Characterization and function analysis of DNA replication enzymes from Hyperthermophilic archaea Palaeococcus pacificus DY20341 [PDF]
, 2016 DNA是至今发现的绝大多数生物遗传信息的携带者。DNA复制机制保证了细胞分裂期间遗传信息的复制和传递，是维持生物遗传稳定性的前提。DNA复制过程涉及几十种蛋白和酶的参与以确保遗传信息被准确而及时的复制。 研究DNA复制对人类疾病，特别是肿瘤及传染病的机理探索有至关重要的意义。然而参与真核生物(包括人类)DNA复制的酶系非常复杂，对真核生物DNA复制机制的研究面临着诸多挑战。细菌的DNA复制系统相对简单，但其复制酶系与真核生物差别较大。古菌的复制酶系与真核生物的复制酶系相似，而且相对简单 ...
赵文昭
core
Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 采用回归正交设计方案，研究了Cd、Cu、Ni复合污染对6种土壤酶（脲酶、转化酶、蛋白酶、磷酸酶、过氧化氢酶、脱氢酶）活性的影响。结果表明：6种土壤酶活性与Cd，Cu，Ni复合污染之间均呈显著或极显著的相关关系，但Cd，Cu，Ni复合污染对各种土壤酶活性的影响存在着明显差异。在复合效应影响中，重金属对土壤酶活性的抑制效应顺序为：Cd〉Cu〉Ni，Cd，Cu对土壤酶的活性多表现为抑制作用，而Ni多表现为激活作用，Cd，Cu，Ni对磷酸酶均表现出一定的激活效应。Cd，Cu ...
罗虹, 刘鹏, 宋小敏
doaj
Pyruvate kinase M2 inhibits cisplatin induced caspase-dependent apoptosis via ERK-mediated signaling pathway in hepatocellular carcinoma cells [PDF]
, 2016 M2型丙酮酸激酶（pyruvatekinaseisoenzymetypeM2，PKM2）在肿瘤代谢 和生长等方面发挥重要作用。此外，PKM2还可作为蛋白激酶及辅助转录因子， 调控相关基因的转录表达，促进肿瘤细胞的增殖。我们实验室前期已经证实了 PKM2在肝细胞癌中高表达，并通过EGF/EGFR及TGFβ/TGFβR信号通路调控 肝癌细胞的迁移、侵袭。本课题研究目的在于进一步探索PKM2在肝癌细胞增 殖与凋亡方面的调控作用及相关分子生物学机制。 采用短发夹RNA转染HepG2和Huh7两株肝癌细胞株 ...
谌小春
core
Plant nutrient‐acquisition strategies contribute to species replacement during primary succession
Journal of Ecology, Volume 113, Issue 4, Page 988-1003, April 2025.Pioneer species Hippophae acquires phosphorus and nitrogen mainly by ‘mining’ and N2‐fixing strategies and thus dominates in the beginning of primary succession. As soil nutrient availability increases with the mobilization of apatite‐P and input of N‐rich plant residues, Hippophae' strategies become less efficient than Populus's scavenging strategies.
Xiao‐Long Li +12 more
wiley +1 more source