气候变化领域集成服务门户(CCPortal): Growth-promoting bacteria and arbuscular mycorrhizal fungus enhance maize tolerance to saline stress

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DOI	10.1016/j.micres.2024.127708
	Growth-promoting bacteria and arbuscular mycorrhizal fungus enhance maize tolerance to saline stress
	Neta, Stella Jorge de Carvalho; Araujo, Victor Lucas Vieira Prudencio; Fracetto, Felipe Jose Cury; da Silva, Cintia Caroline Gouveia; de Souza, Edivan Rodrigues; Silva, William Ramos; Lumini, Erica; Fracetto, Giselle Gomes Monteiro
发表日期	2024
ISSN	0944-5013
EISSN	1618-0623
起始页码	284
卷号	284
英文摘要	Climate change intensifies soil salinization and jeopardizes the development of crops worldwide. The accumulation of salts in plant tissue activates the defense system and triggers ethylene production thus restricting cell division. We hypothesize that the inoculation of plant growth-promoting bacteria (PGPB) producing ACC (1aminocyclopropane-1-carboxylate) deaminase favors the development of arbuscular mycorrhizal fungi (AMF), promoting the growth of maize plants under saline stress. We investigated the efficacy of individual inoculation of PGPB, which produce ACC deaminase, as well as the co-inoculation of PGPB with Rhizophagus clarus on maize plant growth subjected to saline stress. The isolates were acquired from the bulk and rhizospheric soil of Mimosa bimucronata (DC.) Kuntze in a temporary pond located in Pernambuco State, Brazil. In the first greenhouse experiment, 10 halophilic PGPB were inoculated into maize at 0, 40 and 80 mM of NaCl, and in the second experiment, the PGPB that showed the best performance were co-inoculated with R. clarus in maize under the same conditions as in the first experiment. Individual PGPB inoculation benefited the number of leaves, stem diameter, root and shoot dry mass, and the photosynthetic pigments. Inoculation with PGPB 28-10 Pseudarthrobacter enclensis, 24-1 P. enclensis and 52 P. chlorophenolicus increased the chlorophyll a content by 138%, 171%, and 324% at 0, 40 and 80 mM NaCl, respectively, comparing to the non-inoculated control. We also highlight that the inoculation of PGPB 28-10, 28-7 Arthrobacter sp. and 52 increased the content of chlorophyll b by 72%, 98%, and 280% and carotenoids by 82%, 98%, and 290% at 0, 40 and 80 mM of NaCl, respectively. Coinoculation with PGPB 28-7, 46-1 Leclercia tamurae, 70 Artrobacter sp., and 79-1 Micrococcus endophyticus significantly increased the rate of mycorrhizal colonization by roughly 50%. Furthermore, co-inoculation promoted a decrease in the accumulation of Na and K extracted from plant tissue, with an increase in salt concentration, from 40 mM to 80 mM, also favoring the establishment and development of R. clarus. In addition, coinoculation of these PGPB with R. clarus promoted maize growth and increased plant biomass through osmoregulation and protection of the photosynthetic apparatus. The tripartite symbiosis (plant-fungus-bacterium) is likely to reprogram metabolic pathways that improve maize growth and crop yield, suggesting that the AMFPGPB consortium can minimize damages caused by saline stress.
英文关键词	Soil salinity. Bioprotection. Tripartite; interaction. ACC deaminase
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:001224705600001
来源期刊	MICROBIOLOGICAL RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306043
作者单位	Universidade Federal Rural de Pernambuco (UFRPE); Universidade de Sao Paulo; Consiglio Nazionale delle Ricerche (CNR); Istituto per la Protezione Sostenibile delle Piante (IPSP-CNR); Universidade Federal Rural de Pernambuco (UFRPE)
推荐引用方式 GB/T 7714	Neta, Stella Jorge de Carvalho,Araujo, Victor Lucas Vieira Prudencio,Fracetto, Felipe Jose Cury,et al. Growth-promoting bacteria and arbuscular mycorrhizal fungus enhance maize tolerance to saline stress[J],2024,284.
APA	Neta, Stella Jorge de Carvalho.,Araujo, Victor Lucas Vieira Prudencio.,Fracetto, Felipe Jose Cury.,da Silva, Cintia Caroline Gouveia.,de Souza, Edivan Rodrigues.,...&Fracetto, Giselle Gomes Monteiro.(2024).Growth-promoting bacteria and arbuscular mycorrhizal fungus enhance maize tolerance to saline stress.MICROBIOLOGICAL RESEARCH,284.
MLA	Neta, Stella Jorge de Carvalho,et al."Growth-promoting bacteria and arbuscular mycorrhizal fungus enhance maize tolerance to saline stress".MICROBIOLOGICAL RESEARCH 284(2024).