Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the ...Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the behavior, development, survival and fecundity of successively occurred phytophagous insects because a change will redUce plant nutritional value, stimulate plant to produce poisonous chemicals or release synomone attractive to their natural enemies. Induced plant resistance could be an on-off response, be turned on in a relative short time when plants are damaged to above a certain threshold and causes plant show an individual and population effect on phytophagous insects due to its transmission within a plant and between plants. Induced plant resistance is variable among plant species, varieties, individuals and developmental stages and could be influenced by plant density, damage position and level, soil fertility and water content. Two aspects in thisarea, the mechanism of plant causing induced resistance and its relative importance on controlling phytophagous insects, should be studied further for convincing conclusions in the future.展开更多
Transgenic poplar(Populus alba×P.glandulosa cv`84k’) plants with the coleopterous insect resistant genes (BtCry3A and OC-I)were obtained. The transgenic nature of these plants was confirmed by PCR amplification ...Transgenic poplar(Populus alba×P.glandulosa cv`84k’) plants with the coleopterous insect resistant genes (BtCry3A and OC-I)were obtained. The transgenic nature of these plants was confirmed by PCR amplification and dot hybridization. The transgenic poplar’s toxicity towards the Anoplophora glabripennis larvae was assessed on two year-old selected plants in laboratory conditions. The results indicated that the transgenic lines BOGA-38 and BOGA-39 were deleterious for A. glabripennis larvae, and BOGA-5、BOGA-31、BOGA-38、BOGA-39 could inhabit the growth of A. glabripennis larvae. BOGA-39 was the most toxic one among the transgenic lines, with (41.18 %) corected mortality rate and 78.90 % growth inhabit rate for the larvae.展开更多
文摘Changes in ontogeny, morphological character, physiological state, nutritional quality and secondary chemicals of plant could be induced by prior damage. The induced changes might have general negative effects on the behavior, development, survival and fecundity of successively occurred phytophagous insects because a change will redUce plant nutritional value, stimulate plant to produce poisonous chemicals or release synomone attractive to their natural enemies. Induced plant resistance could be an on-off response, be turned on in a relative short time when plants are damaged to above a certain threshold and causes plant show an individual and population effect on phytophagous insects due to its transmission within a plant and between plants. Induced plant resistance is variable among plant species, varieties, individuals and developmental stages and could be influenced by plant density, damage position and level, soil fertility and water content. Two aspects in thisarea, the mechanism of plant causing induced resistance and its relative importance on controlling phytophagous insects, should be studied further for convincing conclusions in the future.
基金国家转基因植物研究与产业化专项课题--优质高产抗干旱耐盐碱杨树基因工程育种研究(J2002 B 004)
文摘Transgenic poplar(Populus alba×P.glandulosa cv`84k’) plants with the coleopterous insect resistant genes (BtCry3A and OC-I)were obtained. The transgenic nature of these plants was confirmed by PCR amplification and dot hybridization. The transgenic poplar’s toxicity towards the Anoplophora glabripennis larvae was assessed on two year-old selected plants in laboratory conditions. The results indicated that the transgenic lines BOGA-38 and BOGA-39 were deleterious for A. glabripennis larvae, and BOGA-5、BOGA-31、BOGA-38、BOGA-39 could inhabit the growth of A. glabripennis larvae. BOGA-39 was the most toxic one among the transgenic lines, with (41.18 %) corected mortality rate and 78.90 % growth inhabit rate for the larvae.
