Arbuscular mycorrhizal fungi enhanced the growth, phosphorus uptake and Pht expression of olive ( Olea europaea L.) plantlets

PeerJ

article

Tao Wu¹  Li Pan¹  Isaac Zipori²  Jihua Mao¹  Rongbo Li¹  Yongpeng Li¹  Yongjie Li¹  Yuebo Jing¹  Haiyun Chen¹ 

[1] Yunnan Academy of Forestry and Grassland;Gilat Research Center, Agricultural Research Organization

关键词: Olea europaea L;    Native arbuscular mycorrhizal fungi;    Growth promotion;    Phosphorus uptake;    Phosphate transporter gene;   

DOI  :  10.7717/peerj.13813

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Olive (Olea europaea L.) is a highly mycotrophic species that has been introduced and cultivated in China for half a century. The arbuscular mycorrhizal fungi (AMF) is extremely valuable as a kind of biofertilizer to promote the health and vigor of olive plants. However, it is still unclear how native AMF impact growth and mineral nutrients, especially phosphorus absorption in the area where olive trees were introduced in China. In the present study, through a pot experiment, the effects of native AMF on the growth, phosphorus uptake and expression levels of four phosphate transporter genes (Pht) of olive plantlets were characterized. We found that (1) typical AMF colonization was observed within the roots of inoculated olive plantlets, and the growth of plantlets was significantly promoted; (2) some indigenous consortia (AMF1 and AMF2) notably promoted the absorption of phosphorus, fertilizers significantly increased the foliar content of nitrogen, and both AMF inoculation and fertilization had no significant effect on the uptake of potassium; and (3) AMF inoculation enhanced the expression of phosphate transporter genes in inoculated olive roots. This work demonstrates the effectiveness of native AMF on the cultivation of robust olive plantlets and highlights the role of AMF in increasing phosphorus uptake. There is great potential in using native AMF consortia as inoculants for the production of healthy and robust olive plantlets.

【 授权许可】

CC BY