干旱区生态环境知识资源中心(Arid): Synergistic use of biochar and the plant growth-promoting rhizobacteria in mitigating drought stress on oak (Quercus brantii Lindl.) seedlings

Arid

DOI	10.1016/j.foreco.2023.120793
	Synergistic use of biochar and the plant growth-promoting rhizobacteria in mitigating drought stress on oak (Quercus brantii Lindl.) seedlings
	Heydari, Mehdi; Hajinia, Somayeh; Jafarian, Nahid; Karamian, Mahnaz; Mosa, Zeinab; Asgharzadeh, Shokoufeh; Rezaei, Nasrin; Guidi, Lucia; Valko, Orsolya; Prevosto, Bernard
通讯作者	Heydari, M
来源期刊	FOREST ECOLOGY AND MANAGEMENT
ISSN	0378-1127
EISSN	1872-7042
出版年	2023
卷号	531
英文摘要	The successful early establishment of seedlings is a challenging step for the management of forests in semi-arid regions, such as in the oak (Q. brantii) forests in western Iran. To address this challenge, we tested the separate and combined effects of different biofertilizers: we evaluated the influence of the application of biochar and plant growth-promoting rhizobacteria (PGPR) on the growth of oak seedlings subjected to water stress in controlled conditions. Two acorns were sown in a total of 216 pots distributed according to the following treatments: 3 water treatments (100, 75 and 50 % of field capacity), 4 biochar treatments (0, 1, 2 and 3 % of soil weight), 2 PGPR treatments (absence or presence) in 9 replicates. Biochar was derived from mistletoe (Loranthus europaeus), a widespread hemi-parasite plant in the studied oak forests. After emergence, a total of 20 ecophysiological, morphological and growth traits were measured on oak seedlings. We found that the interaction between irri-gation, biochar and PGPR significantly influenced the ecophysiological attributes of the seedlings. Comparing application to non-application of PGPR, we found that chlorophyll content, photosynthesis rate and biomass of shoots were respectively increased by 21, 50 and 19 % in the absence of water stress and by 54, 14 and 18 % under severe water stress conditions. Moderate biochar concentrations improved seedling growth and ecophysiological responses whereas the highest concentration of biochar had a detrimental effect. A PLS path model revealed the direct and indirect relationships between the treatments, the seedling morpho-physiological traits and the final variable of interest (total dry biomass). The model explained 78 % of the total variance and showed that the root growth indices (path coefficient = 0.665) had a significant direct effect on oak dry matter whereas this effect was reduced with shoot growth indices. We found that the use of moderate levels of biochar alone or in combination with PGPR can benefit oak seedling development in water-limited conditions but further studies are still needed to test the effectiveness and applicability of these treatments in field conditions.
英文关键词	Growth Ecophysiological traits Irrigation Multivariate analyses PLS model Pseudomonas fluorescens
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000927311300001
WOS关键词	SOIL PROPERTIES ; WATER-DEFICIT ; NUTRIENT-UPTAKE ; SALT STRESS ; PHOTOSYNTHESIS ; YIELD ; AMENDMENT ; IMPACT ; FIELD ; CONSERVATION
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396382
推荐引用方式 GB/T 7714	Heydari, Mehdi,Hajinia, Somayeh,Jafarian, Nahid,et al. Synergistic use of biochar and the plant growth-promoting rhizobacteria in mitigating drought stress on oak (Quercus brantii Lindl.) seedlings[J],2023,531.
APA	Heydari, Mehdi.,Hajinia, Somayeh.,Jafarian, Nahid.,Karamian, Mahnaz.,Mosa, Zeinab.,...&Prevosto, Bernard.(2023).Synergistic use of biochar and the plant growth-promoting rhizobacteria in mitigating drought stress on oak (Quercus brantii Lindl.) seedlings.FOREST ECOLOGY AND MANAGEMENT,531.
MLA	Heydari, Mehdi,et al."Synergistic use of biochar and the plant growth-promoting rhizobacteria in mitigating drought stress on oak (Quercus brantii Lindl.) seedlings".FOREST ECOLOGY AND MANAGEMENT 531(2023).