AUTHOR=Ali Mohammed , Miao Long , Hou Qiuqiang , Darwish Doaa B. , Alrdahe Salma Saleh , Ali Ahmed , Benedito Vagner A. , Tadege Million , Wang Xiaobo , Zhao Jian 

TITLE=Overexpression of Terpenoid Biosynthesis Genes From Garden Sage (Salvia officinalis) Modulates Rhizobia Interaction and Nodulation in Soybean

JOURNAL=Frontiers in Plant Science

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.783269

DOI=10.3389/fpls.2021.783269

ISSN=1664-462X

ABSTRACT=<p>In legumes, many endogenous and environmental factors affect root nodule formation through several key genes, and the regulation details of the nodulation signaling pathway are yet to be fully understood. This study investigated the potential roles of terpenoids and terpene biosynthesis genes on root nodule formation in <italic>Glycine max</italic>. We characterized six terpenoid synthesis genes from <italic>Salvia officinalis</italic> by overexpressing <italic>SoTPS6, SoNEOD, SoLINS, SoSABS, SoGPS</italic>, and <italic>SoCINS</italic> in soybean hairy roots and evaluating root growth and nodulation, and the expression of strigolactone (SL) biosynthesis and early nodulation genes. Interestingly, overexpression of some of the terpenoid and terpene genes increased nodule numbers, nodule and root fresh weight, and root length, while others inhibited these phenotypes. These results suggest the potential effects of terpenoids and terpene synthesis genes on soybean root growth and nodulation. This study provides novel insights into epistatic interactions between terpenoids, root development, and nodulation in soybean root biology and open new avenues for soybean research.</p>