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Concepts and Direction of Induced Systemic Resistance in Plants and its Application 总被引:11,自引:0,他引:11
Joseph Kuć 《European journal of plant pathology / European Foundation for Plant Pathology》2001,107(1):7-12
Resistance to plant disease is often specific and metabolites and receptors contributing to this specificity may have specific structures. However, simple, structurally-unrelated compounds induce systemic resistance in unrelated plants to diverse pathogens including fungi, bacteria and viruses. Both resistance and induced systemic resistance (ISR) are associated with the rapid accumulation of the same structurally unrelated putative defense compounds that have diverse functions. It has been suggested that cultivar (race)-specific resistance is initiated by the specific interaction of a pathogen product (or pathogen induced product) and a plant receptor. However, restricted infection by pathogens can result in ISR and many different compounds can cause ISR. It is thus evident that there are both specific and non-specific routes to the master switch for ISR and there may be more than one master switch. Are reactive oxygen species and free radicals regulating the master switch(es) via both routes? It is also evident there are many switches, other than the master switch. Adding to the complexity of resistance and ISR are the observations that different compounds and pathways may mediate different biochemical resistances. Activation of one of the pathways may antagonize or enhance the activation or effectiveness of another. The review will address these complexities and questions and propose directions of research which require high priority. Factors which encourage and suppress the application of ISR in agriculture will also be addressed. 相似文献
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Kladar Nebojša Anačkov Goran Srđenović Branislava Gavarić Neda Hitl Maja Salaj Nebojša Jeremić Katarina Babović Siniša Božin Biljana 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(3):390-395
Plant Foods for Human Nutrition - St. John’s wort has been used for centuries in traditional medicine of many cultures, and nowadays it is well-known as a clinically important antidepressant... 相似文献
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Filip Franeta Sanja Mikić Željko Milovac Bojan Mitrović Dušanka Inđić Slavica Vuković 《国际虫害防治杂志》2019,65(1):23-32
Maize is arguably the most widely grown crop in the world, but it is often associated with one of its major insect pests, the European corn borer (ECB). The damage caused by this species to maize production is generally variable, but in many cases it is economically significant. This review paper provides an overview of the research findings on the natural plant defence mechanisms against ECB larvae published till now. What is resistance and how it is achieved, what is the chemical response of maize plants to insect feeding and how tolerance can be increased. A short introduction in breeding for resistance and a discussion if the mentioned traits can be used in conventional breeding in order to create maize hybrids less affected by ECB are given. 相似文献
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Slađana Č. Alagić Snežana B. Tošić Mile D. Dimitrijević Jelena V. Petrović Dragana V. Medić 《Communications in Soil Science and Plant Analysis》2016,47(17):2034-2045
Inductively coupled plasma optical emission spectroscopy, in combination with calculation of various biological factors, was used in this study not only for a simple illustration of the present status of some essential and non-essential metals such as copper (Cu), zinc (Zn), nickel (Ni), lead (Pb), arsenic (As), and cadmium (Cd) in the grapevine cultivar Rkatsiteli and wild blackberry from East Serbia but also for the estimation of plant bioaccumulation potentials. Great majority of detected metal concentrations were in normal ranges except in few cases: Zn concentrations were at the level of deficiency in almost all plant parts, and some Cu and As concentrations were at the levels that could be considered phytotoxic. Biological accumulation factors provided very informative data on metal accumulation and translocation in both plants and pointed to low accumulation rates of metals except in the case of Cu, Zn, and As in some wild blackberry tissues. 相似文献
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中国西部六种特有松科植物核型及细胞地理学研究 总被引:4,自引:0,他引:4
本文分析的麦吊云杉、峨眉冷杉等4种2变种松科植物属我国特有种,主产中国西部,观察到的根尖细胞核型有5种为首次报导。麦吊云杉(Piceabrachytyla)和变种油麦吊云杉(P.b.var.complanata)为2A核型,K(2n)=24=20m+4sm;天山云杉(P.schrenkianavar.fianshanica)为2B核型,K(2n=24=16m+8sm;峨眉冷杉(Abiesfabri)为2A模型,K(2n)=24=14m+8sm+2st;红杉(Larixpotaninii)为2A核型,k(2n)=24=12m+10sm+2st;高山松(Pinusdensata)为1A核型,k(2n)=24=24m。试材来源于原始林区的自然居群,根据核型资料,结合各种的生态、地理分布,进行了遗传变异及进化程度的讨论。 相似文献
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岷江柏木和西藏柏木的核型及亲缘关系研究 总被引:3,自引:0,他引:3
本文首次报导了岷江柏木(Curpressuschengiana)和西藏柏木(Cupressustorulosa)的体细胞核型。两种有相同的核型公式K(2n)=22=20m+2sm,同属1A核型,其它核型数据相近。岷江柏木为中国特有种,西藏柏木主产我国,结合生态、地理分布特征及生化分析资料,讨论了两者的亲缘关系及生态同群种的一致性趋势。 相似文献
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