根际促生菌剂对滇重楼生理特性及无机元素的影响  

Effects of Plant Growth-promoting Rhizobacteria on Physiological Characteristics and Inorganic Elements in Paris polyphylla var.yunnanensis

作　　者：赵晶晶 李卓蔚 许凌峰 郭冬琴 黎海灵 周浓 顿宝庆[2] ZHAO Jing-jing;LI Zhuo-wei;XU Ling-feng;GUO Dong-qin;LI Hai-ling;ZHOU Nong;DUN Bao-qing(Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs,College of Food and Biological Engineering,Chongqing Three Gorges University,Chongqing 404120,China;Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]重庆三峡学院生物与食品工程学院,三峡库区道地药材绿色种植与深加工重庆市工程实验室,重庆404120 [2]中国农业科学院作物科学研究所,北京100081

出　　处：《中国实验方剂学杂志》2022年第2期166-174,共9页Chinese Journal of Experimental Traditional Medical Formulae

基　　金：国家自然科学基金项目(81260622);“成渝地区双城经济圈建设”科技创新项目(KJCX2020046);重庆市教委科学技术研究项目(KJQN202101239)。

摘　　要：目的:研究接种不同根际促生菌剂(PGPR)对滇重楼幼苗的生长发育和入药品质的影响,为培育优质滇重楼药材提供参考。方法:通过室温盆栽接种试验方法,采用单因素完全随机设计,研究了5种不同PGPR对滇重楼生理特性及无机元素的影响。结果:接种外源不同PGPR可以不同程度地促进滇重楼的生长发育,延缓叶片的衰老,提高新根茎和老根茎的药用价值。其中,与未接种空白相比,外源接种复合微生物菌肥(FH)和三炬灌金液(SJ)可以增加根系活力及叶片内光合色素含量,增强叶片内的抗氧化酶活性[超氧化物歧化酶(SOD),过氧化氢酶(CAT)和过氧化物酶(POD)],减少叶片中丙二醛(MDA)的产生,其减少幅度依次为10.46%~39.62%和20.99%~53.12%,随着生育进程的推进,MDA的抑制率逐渐增加,这有效地延缓了滇重楼叶片的衰老。此外,外源接种不同PGPR可以不同程度地增加新根茎和老根茎内营养元素含量,降低重金属元素含量,提高了滇重楼根茎的药用价值。结论:FH和SJ对滇重楼幼苗生长的促进作用及根茎药用价值的调控效果最佳,为PGPR在滇重楼上的应用推广提供了参考依据。Objective:To study the effects of different plant growth-promoting rhizobacteria(PGPR)on the growth of Paris polyphylla var.yunnanensis seedlings and the quality of its medicinal parts,in order to provide reference for the cultivation of high-quality P.polyphylla var.yunnanensis.Method:The pot culture experiment at room temperature and the single-factor completely random design were employed for exploring the effects of five PGPR on physiological characteristics and inorganic elements of P.polyphylla var.yunnanensis.Result:The results showed that the exogenous inoculation of different PGPR promoted the growth and development of P.polyphylla var.yunnanensis to varying degrees,delayed the senescence of leaves,and improved the medicinal value of new and old rhizomes.Compared with the non-inoculated control,the exogenous inoculation of compound microbial fertilizer(FH)and microbial agent Sanju Guanjin liquid(SJ)enhanced the root vigor,increased the content of photosynthetic pigments and the activities of anti-oxidant enzymes[superoxide dismutase(SOD),catalase(CAT),and peroxidase(POD)],and reduced the content of malondialdehyde(MDA)in leaves.Their inhibition rates against MDA were 10.46%-39.62%and 20.99%-53.12%,respectively.With the growth of P.polyphylla var.yunnanensis,the inhibition rate against MDA gradually increased,which effectively delayed the senescence of P.polyphylla var.yunnanensis leaves.In addition,the exogenous inoculation of different PGPR promoted the accumulation of nutrient elements in new and old rhizomes,lowered the heavy metal content to varying degrees,and improved the medicinal value of P.polyphylla var.yunnanensis rhizomes.Conclusion:FH and SJ have exhibited the best promoting effect on the growth of P.polyphylla var.yunnanensis seedlings and also the best regulatory effect on the medicinal value of P.polyphylla var.yunnanensis rhizomes,which has provided reference for the application and promotion of PGPR in the growth of P.polyphylla var.yunnanensis.

关 键 词：滇重楼 植物根际促生菌 生理特性 营养元素 重金属元素 

分 类 号：R284.2[医药卫生—中药学] R289[医药卫生—中医学]