Chaudhary Parul, Khati Priyanka, Gangola Saurabh, Kumar Ashish, Kumar Rajeew, Sharma Anita
Department of Microbiology, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand India.
Crop Production Division, Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora, Uttarakhand India.
3 Biotech. 2021 May;11(5):237. doi: 10.1007/s13205-021-02790-z. Epub 2021 Apr 25.
The role of plant growth-promoting rhizobacteria along with nanochitosan on maize productivity remains unexplored. In the present study we report the effect of nanochitosan and PGPR on growth, productivity and mechanism(s) involved in defence response in under field conditions. Application of nanochitosan (50 mg L) along with plant growth-promoting rhizobacteria enhanced seed germination, plant height, root length, leaf area, fresh and dry weight of shoot and root, chlorophyll, carotenoids, total sugar and protein content upto 1.5-2 fold over control in maize after 60 days of the field experiment. Treated maize plants also showed enhanced level of defence-related biomolecules like phenolic compounds (103%), catalase (60.09%), peroxidase (81.57%) and superoxide dismutase (76.50%) over control. Level of phenols and sugar content in maize plants enhanced which was analysed by GC-MS (Gas chromatography-mass spectrometry). Significant increase in cob length, cob weight/plot, grain yield/plot and 100 grain weight was observed in treated maize plants over control. As per the results, the combination of nanochitosan and plant growth-promoting rhizobacteria was reported to improve the health and yield of maize. The interaction can be further studied in field trials for improvement in agriculture production.
The online version contains supplementary material available at 10.1007/s13205-021-02790-z.
植物促生根际细菌与纳米壳聚糖对玉米生产力的作用尚未得到探索。在本研究中，我们报告了纳米壳聚糖和植物促生根际细菌在田间条件下对玉米生长、生产力以及防御反应相关机制的影响。在田间试验60天后，纳米壳聚糖（50毫克/升）与植物促生根际细菌联合施用使玉米的种子发芽率、株高、根长、叶面积、地上部和根部的鲜重与干重、叶绿素、类胡萝卜素、总糖和蛋白质含量比对照提高了1.5至2倍。处理后的玉米植株还表现出与防御相关的生物分子水平提高，如酚类化合物（提高103%）、过氧化氢酶（提高60.09%）、过氧化物酶（提高81.57%）和超氧化物歧化酶（提高76.50%）。通过气相色谱 - 质谱联用（GC - MS）分析发现玉米植株中的酚类和糖含量增加。与对照相比，处理后的玉米植株在穗长、穗重/小区、籽粒产量/小区和百粒重方面均有显著增加。根据结果，纳米壳聚糖与植物促生根际细菌的组合据报道可改善玉米的健康状况和产量。这种相互作用可在田间试验中进一步研究，以提高农业产量。
在线版本包含可在10.1007/s13205 - 021 - 02790 - z获取的补充材料。
