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[1]张奇 张清旭 陈尧 林舜贤 郭永艳 李家玉 何海斌**.稗草根系分泌物诱导下水稻化感抑草潜力及根际土壤微生物多样性变化[J].应用与环境生物学报,2020,26(04):1-10.[doi:10.19675/j.cnki.1006-687x.2019.09049]
 ZHANG Qi,ZHANG Qingxu,CHEN Yao,et al.Change of allelopathic potential and microbial diversity in rhizosphere soils of rice under induction of barnyard grass root exudates*[J].Chinese Journal of Applied & Environmental Biology,2020,26(04):1-10.[doi:10.19675/j.cnki.1006-687x.2019.09049]
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稗草根系分泌物诱导下水稻化感抑草潜力及根际土壤微生物多样性变化()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年04期
页码:
1-10
栏目:
研究论文
出版日期:
2020-08-25

文章信息/Info

Title:
Change of allelopathic potential and microbial diversity in rhizosphere soils of rice under induction of barnyard grass root exudates*
作者:
张奇12 张清旭2 陈尧2 林舜贤2 郭永艳2 李家玉2 何海斌2**
1武夷学院茶与食品学院 武夷山 354300
2福建省农业生态过程与安全监控重点实验室,福建农林大学生命科学学院 福州 350002
Author(s):
ZHANG Qi12 ZHANG Qingxu2 CHEN Yao2 LIN Shunxian2 GUO Yongyan2 LI Jiayu2 & HE Haibin2**
1School of Tea and Food Science, Wuyi University, Wuyishan City 354300, China
2Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
关键词:
水稻化感作用稗草种植液诱导微生物多样性BIOLOG
Keywords:
rice allelopathy barnyard grass root exudates induce microbial diversity BIOLOG
DOI:
10.19675/j.cnki.1006-687x.2019.09049
摘要:
采用土壤抑草圈法研究水稻/稗草共培下,稗草种植液诱导对水稻化感抑草潜力及根际土壤微生物多样性的影响。结果表明,稗草种植液诱导显著提升了化感水稻PI312777和非化感水稻Lemont对稗草生长的抑制作用。PI312777对稗草株高、鲜重和干重的抑制率分别增加5.17%、5.03%和5.77%;Lemont分别增加7.18%、5.49%和1.99%。诱导处理后两种水稻根际土壤细菌、真菌和放线菌数量均没有显著变化,但诱导后非化感水稻Lemont根际真菌/细菌比率更接近化感水稻PI312777。诱导处理提高了两种水稻根际微生物碳源利用率,化感水稻PI312777根际土壤微生物对氨基酸类、羧酸类、胺类和多聚物类碳源的利用程度都显著提高,分别提高1.16、1.44、1.1倍和1.33倍;非化感水稻Lemont根际土壤微生物对糖类、氨基酸类、羧酸类和胺类碳源的利用程度都显著提高,分别提高1.80、1.90、2.54和1.61倍。相关性分析表明,水稻根际土壤微生物对酚酸类、羧酸类和胺类碳源的利用程度与稗草抑制率呈显著正相关。本研究结果表明诱导提高水稻化感抑草潜力与根际土壤微生物的变化密切相关。诱导提高水稻酚酸类物质分泌释放引起了土壤微生物变化,对水稻化感抑草作用起重要的调节作用。(图3 表3 参36 )
Abstract:
In this paper, the change of allelopathic potential of allelopathic rice PI312777 (PI) and non- allelopathic rice Lemont (LE), and the soil microorganisms diversity in rice rhizosphere soils under induction of barnyard grass exudates were studied by the way of rice/ barnyard grass culture together in pot soils. The results showed that these two rice cultivars inducted with barnyard grass exudates have significantly increased the inhibition rate on the growth of barnyard grass. The inhibition rates of PI on plant height, fresh weight and dry weight of barnyard grass were increased by 5.17%, 5.03% and 5.77%, respectively; and in LE were increased by7.18%, 5.49% and 1.99%, respectively. The number of bacteria, fungi and actinomycetes in the rice rhizosphere soils had not significantly change d. However, the ratio of fungi/bacteria in the rhizosphere soils of LE was apt to the PI. The utilization of amino acids, carboxylic acids, amines and polymers by PI rhizosphere soil microorganisms were increased by 1.16 times, 1.44 times, 1.18 times, and 1.33 times, respectively. The utilization of carbohydrate, amino acid, carboxylic acid and amine by LE rhizosphere soil microorganisms were increased by 1.80 times, 1.90 times, 2.54 times, and 1.61 times, respectively. Correlation analysis showed that the degree of utilization of phenolic acids, carboxylic acids and amines by rice rhizosphere microorganisms were significantly and positively correlated with the inhibition rate of barnyard grass. The results showed that the change of rice allelopathic potential was closely related to the functional diversity of rhizosphere microorganisms. Increase of phenolic acids under induction of barnyard grass exudates change the soil microorganisms, which played an important role in regulating the allelopathy of rice.

备注/Memo

备注/Memo:
收稿日期 Received: 2019-09-20 接受日期 Accepted: 2019-11-18
*国家自然科学基金(31370380,31070447),福建农林大学科技创新专项(KFA18043A)共同资助
**通讯作者 Corresponding author (E-mail: alexhhb@163.com)
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更新日期/Last Update: 2019-12-05