نتایج جستجو برای: phytotoxic activity
تعداد نتایج: 1135218 فیلتر نتایج به سال:
A purified toxic glycopeptide from Corynebacterium sepedonicum (Speick.) Dows., possesses the capacity to wilt plant cuttings. The toxin induces a rapid g:neral flaccidity in stem tissues followed by a leaf wilt making its effects significantly different from that induced by high molecular weight substances (dextrans). In the latter case, the initial effect of -a dextran induced wilt is a leaf ...
The synthesis and a conformational study of a number of homologues of the well known antibiotic, phytotoxic leucinostatin A are reported. The circular dichroism of all the compounds are discussed. Some conclusions on the SAR of these compounds are drawn. The influence of the alpha-helical conformation and/or the increased lipophile character on their interesting biological activities is emphasi...
Ligularia cymbulifera is one of the predominant species in the Hengduan Mountains, China, and has led to a decrease in the amount of forage grass in this area. However, little is known about the mechanism behind its predominance. In this study, two novel eremophilane sesquiterpenes, ligulacymirin A and B (1 and 2), together with seven other known terpenoids (3-9), were isolated from the roots o...
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