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Isolation and Identification of a Nitrogen Fixing Bacteria and Its Growth Promoting Characteristics in Different Banana Varieties
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Yunlong XU1, 2, You ZHOU2, Jun WANG2, Lijia GUO2, Junsheng HUANG2, Laying YANG2, *
Chinese Journal of Tropical Crops | 2024, 45(5) : 936 - 943
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Chinese Journal of Tropical Crops | 2024, 45(5): 936-943
• Plant Cultivation, Physiology & Biochemistry •
Isolation and Identification of a Nitrogen Fixing Bacteria and Its Growth Promoting Characteristics in Different Banana Varieties
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Yunlong XU1, 2, You ZHOU2, Jun WANG2, Lijia GUO2, Junsheng HUANG2, Laying YANG2, *
Affiliations
  • 1.School of Plant Protection, Hainan University, Haikou, Hainan 570228, China
  • 2.Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Integrated Pest Management of Tropical Crops, Ministry of Agriculture and Rural Affairs / Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
Published: 2024-05-25 doi: 10.3969/j.issn.1000-2561.2024.05.008
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A nitrogen fixing bacteria strain named BWLY3X-6 was isolated from the rhizosphere soil of wild banana (Musa nana Lour. sp) in Hainan, China using Ashby nitrogen free medium, and .its morphological characteristics, physiological and biochemical characteristics, 16S rRNA and gyrB sequence analysis, nitrogen fixation characteristics and growth promoting ability to different banana varieties were studied. The strain was identified as an azotobacter Klebsiella variicola, and its extracellular ammonia nitrogen content was (17.98±1.88)μg/mL, nitrogenase activity was (220.51±8.21) ng/L. The results of the growth promoting test of the strain on different banana varieties showed that, compared with the blank control and 0.5% urea treatment, after inoculation with BWLY3X-6, under the inoculation concentration of 106 CFU/mL and 108 CFU/mL, there were significant changes in various biomass of M. acuminata AAA Cavendish cv. Nantianhuang and M. acuminata AAA Cavendish cv. Baxi (P<0.05), with more significant changes in root length, with the increase ratio of 43.5% and 54.6% respectively. In this study, nitrogen fixing bacteria with good nitrogen fixing ability were screened, and this strain had a good promoting effect on banana growth, wihich would provide a theoretical basis for its subsequent practical application in agricultural production.

Klebsiella variicola  /  extracellular ammonia nitrogen  /  banana  /  growth promotion
Yunlong XU, You ZHOU, Jun WANG, Lijia GUO, Junsheng HUANG, Laying YANG. Isolation and Identification of a Nitrogen Fixing Bacteria and Its Growth Promoting Characteristics in Different Banana Varieties[J]. Chinese Journal of Tropical Crops, 2024 , 45 (5) : 936 -943 . DOI: 10.3969/j.issn.1000-2561.2024.05.008
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Year 2024 volume 45 Issue 5
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Article Info
doi: 10.3969/j.issn.1000-2561.2024.05.008
  • Receive Date：2022-11-16
  • Online Date：2026-06-23
  • Published：2024-05-25
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History
  • Received：2022-11-16
  • Revised：2023-03-31
Funding
Affiliations
    1.School of Plant Protection, Hainan University, Haikou, Hainan 570228, China
    2.Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Integrated Pest Management of Tropical Crops, Ministry of Agriculture and Rural Affairs / Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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