Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (2): 401-408.DOI: 10.3969/j.issn.1000-2561.2020.02.027

• Ecology • Previous Articles     Next Articles

Variation Characteristics of Drought and Rehydration on the Growth of Hibiscus rosa-sinensis Linn. and Soil Microbial Diversity in Rhizosphere

HUANG Xuguang1,QIN Ling1,HUANG Lidan1,LU Yansong1,LUO Enbo2,HUANG Lingpu1,LIU Yuefei1,*()   

  1. 1. Research Institute of Landscape Architecture of Nanning City, Nanning, Guangxi 530011, China
    2. Nanning Greening Project Management Center, Nanning, Guangxi 530011, China
  • Received:2019-04-12 Revised:2019-07-15 Online:2020-02-25 Published:2020-03-21
  • Contact: LIU Yuefei

Abstract:

A pot experiment using a cultivar ‘Purple Peony’ as the experimental material was conducted under drought and rehydration condition. The effects of drought at seedling stage and rehydration on the physiological characteristics of roots and the soil microbial diversity in the rhizoshere were studied. The total root length, root surface area and root tip numbers were significantly decreased in the drought and rehydration treatment (T2), compared to the normal condition (CK), but they were significantly increased compared with the drought stress without rehydration (T1). Under drought stress (T1), Algiphilus, Aureispira, Chloronema, Acrospermum were the special bacteria. Anaerolineaceae, Acidobacteria, Acidimicrobiales, Sphaerobacter and Streptomyces were the dominant bacteria in the rhizoshpres of all drought and normal treatments. Sordariale, Eurotiales, Pseudallescheria, Pleosporales and Cladosporium were the dominant fungi. Goniomonas, Lamprospora and Sorodiplophrys were the special fungi in drought stress (T1) and rehydration after drought stress (T2). Bacteria such as Acidimicrobium, Anaerolineaceae, Algiphilus, Pseudallescheria, Cladosporium, having certain biocontrol effects, could be reasonably used in agricultural production, which could contribute to the resistance of plants to drought stress and the improvement of water use of Hibiscus under drought stress.

Key words: drought stress, high-throughput sequencing, Hibiscus, root system, microorganisms diversity

CLC Number: