Arbuscular mycorrhizal colonization outcompetes root hairs in maize under low phosphorus availability

• DOI: 10.1093/aob/mcaa159
• Publication Date: 2020-08-28T11:47:03Z
• Authors: Xiaomin Ma; Xuelian Li; Uwe Ludewig
• Keywords: Root hair; Arbuscular mycorrhizal fungi

Abstract Background and Aims An increase in root hair length density the development of arbuscular mycorrhiza symbiosis are two alternative strategies most plants to root–soil surface area under phosphorus (P) deficiency. Across many plant species, mycorrhization inversely correlated. Root architecture, rooting physiology also differ between species. This study aims understand relationship among hairs, mycorrhizal fungi (AMF) colonization, growth, P acquisition mycorrhizal-specific Pi transporter gene expression maize. Methods Using nearly isogenic maize lines, B73 wild type rth3 hairless mutant, we quantified effect hairs AMF infection a calcareous soil deficiency through combined analysis morphological, physiological molecular factors. Key Results Wild-type extended rhizosphere for acid phosphatase activity by 0.5 mm compared with as measured situ zymography. Total was longer than that Higher colonization mycorrhiza-induced phosphate were identified mutant deficiency, but growth similar type. The dependency 33 % higher dependency. Conclusions results larger inoculation ways these compete each other.