生长素介导下三唑醇在大豆植株内的传导性

[目的]进一步试验IAA和NAA分别与顶向传导的杀菌剂三唑醇进行耦合的耦合物在大豆苗中的传导性。[方法]用耦合物药液对大豆苗进行喷雾处理,色谱法检测耦合物在大豆苗各部位的含量。[结果]NAA-三唑醇和三唑醇均不能向下传导至根部,而IAA-三唑醇却具有双向传导的特性。0.5 mmol/L IAA-三唑醇处理大豆苗叶片后12 h检测到根部含量为1.87μg/g（FW）,高于此时茎中的含量0.68μg/g,但与同浓度的IAA混合施用时,根中IAA-三唑醇的含量减少到0.80μg/g。[结论]耦合物中IAA基团能引导耦合物向下传导。     

生长素与杀菌剂耦合物合成及其生物活性

将植物内源生长素吲哚乙酸和外源生长素α-萘乙酸分剐与三唑类杀菌剂三唑醇和烯唑醇进行拼接合成,得到4种生长素-杀菌剂的耦合物,并通过核磁共振谱、质谱等方法进行了表征。试验了4种耦合物对水稻纹枯病菌、荔枝炭疽病菌、水稻稻瘟病菌及白菜黑虎病菌的室内毒力和诱导去根大豆植株生根的活性。结果表明,4种耦合物均在一定程度上保持了生长调节活性和杀菌活性。     

萘乙酸衍生物的合成及其生物活性的测定

从α-萘乙酸出发,衍生合成了萘乙酸甲酯、萘乙酰肼、丙酮萘乙酰腙、唑酮萘乙酰腙、萘乙酸三唑醇酯和萘乙酸烯唑醇酯,并通过核磁共振氢谱进行了结构表征.测定了所有化合物诱导大豆苗生根的活性和萘乙酸三唑醇酯、萘乙酸烯唑醇酯的室内抑菌活性.结果表明,所有衍生物均具有一定的植物生长调节活性,其活性的大小与化合物的油水分配系数没有直接的相关性;α-萘乙酸与三唑醇和烯唑醇等杀菌剂成酯反应后,酯化产物的抑菌活性比三唑醇和烯唑醇本身的抑菌活性低.     

乙酰水杨酸与杀菌剂的藕合物合成及生物活性

通过乙酰水杨酸(ASA)分别与噻菌灵、三唑醇和 口 恶 霉灵3种杀菌剂拼接,合成了未见文献报道的ASA-噻菌灵、ASA-三唑醇、ASA- 口 恶 霉灵的藕合物,并以未藕合的3种杀菌剂为对照,测定了3种藕合物对水稻纹枯病菌Rhizoctonia solani的室内毒力;以水杨酸(SA)为对照,测定了ASA- 口 恶 霉灵藕合物对大豆叶片过氧化物酶(POD)活性的影响。结果表明,3种杀菌剂与ASA藕合后,杀菌毒力与藕合前的相当,同时还具有类似SA诱导植物POD活性升高的特性。     

生长素介导下三唑醇在大豆植株内的传导性(英文)

[Objective] This study was to investigate the mobility of IAA-triadimenol and NAA-triadimenol in soybean seedlings. [Method] Soybean seedlings were treated by spraying the solution of conjugated compounds onto their leaves; and chromatography was employed to measure the contents of IAA-triadimenol and NAA-triadimenol in different parts of these soybean seedlings, through which to represent the mobility of the conjugates. [Result] Both the triadimenol and NAA-triadimenol could not transport basipetally; whereas IAA-triademenol was ambimobile. When sprayed with 0.5 mmol/L IAA-triadimenol, as much as 1.87 μg/(g·FW) IAA-triadimenol was detected in the roots of soybean seedlings 12 h later, which was higher than that in the stem [0.68 μg/(g·FW)]; while that decreased to 0.80 μg/(g·FW) in the seedlings sprayed with 0.5 mmol/L IAA-triadimenol and the same concentration of IAA. [Conclusion] IAA moiety of the conjugate could enhance the transport and accumulation of the fungicide towards the root via the IAA carriers.