| 娄彻氏链霉菌ZZ-9菌株发酵液对小麦幼苗的促生作用 |
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| 引用本文：谢玉琴，马丹丹，杨 树，李 培，徐秉良，薛应钰.娄彻氏链霉菌ZZ-9菌株发酵液对小麦幼苗的促生作用[J].西北农业学报,2019,28(8):1335~1343 |
| DOI:10.7606/j.issn.1004-1389.2019.08.016 |
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| 基金项目:甘肃省高等学校科研项目（2017A-028）；甘肃省自然科学基金（145RJZA095）。 |
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| 中文摘要:娄彻氏链霉菌（Streptomyces rochei）ZZ-9菌株（专利保存号：CGMCC No.15245）是一株稳定性较强、对多种真菌病害病菌具有很好抑制效果的生防菌株。为了明确其对小麦的促生作用，通过室内盆栽试验研究不同稀释倍数的生防菌ZZ-9发酵液对小麦幼苗生长的影响，测定ZZ-9菌液灌根处理后小麦体内丙二醛（MDA）、叶绿素质量浓度和多酚氧化酶（PPO）、苯丙氨酸解氨酶（PAL）活性的变化。结果表明：生防菌ZZ-9不同剂量的发酵液对小麦幼苗均有一定的促生作用，其中以发酵液原液促生效果最明显，第2次灌根处理 10 d后，小麦幼苗株高和根长增幅最大，分别为43.60%（P<0.05）和49.80%（P<0.05）；PPO和PAL活性显著增强，增幅分别为106.67%（P<0.05）和58.70%（P<0.05）;叶绿素质量浓度较对照增加 56.53% （P<0.05）;MDA质量摩尔浓度较对照降低了53.62%（P<0.05）。可见，娄彻氏链霉菌生防菌株 ZZ-9对小麦幼苗生长具有明显的促生作用，有望为新型多功能生物制剂的开发提供优良的菌种资源。 |
| 中文关键词:娄彻氏链霉菌 小麦 促生作用 |
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| Growth Promotion Effect of Streptomyces rochei Strain ZZ-9 on Wheat Seedlings |
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| Abstract:Streptomyces rochei strain ZZ-9(Patent Preservation Number:CGMCC No. 15245) is a biological strain with strong stability and good inhibitory effect on various fungal diseases. In order to determine growth-promoting effect of ZZ-9 on wheat, different dilution ratios of ZZ-9 fermentation liquid were irrigated the root of wheat seedlings grown in pot experiments, and the changes of malonaldehyde(MDA), chlorophyll mass concentration and activity of polyphenol oxidase(PPO) and phenylalanin ammo-nialyase(PAL) in wheat were determined after the treatment of ZZ-9 mycelium. The results showed that ZZ-9 fermentation liquid with different dilutions had certain stimulating effects on wheat seedlings. Among them, the undiluted fermentation liquid had the most obvious effect. At the 10 d after the second irrigating root treatment, the increase of plant height and root length of wheat seedlings were the largest, by 43.60 %(P<0.05) and 49.80%(P<0.05), respectively; the activity of PPO and PAL increased significantly, by 106.67%(P<0.05) and 58.70%(P<0.05), respectively; compared with the control, chlorophyll mass concentration increased by 56.53%(P<0.05), but MDA mass concentration decreased by 53.62%(P<0.05). These results confirmed that the Streptomyces rochei strain ZZ-9 has obvious effect on the growth of wheat seedlings, and ZZ-9 strain is expected to be an excellent bacterial resources for the development of new multifunctional biological preparations. |
| keywords:Actinomycete Wheat Promoting effect |
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