In situ Root Phenotypes of Cotton Seedlings Under Phosphorus Stress Revealed Through RhizoPot

• DOI: 10.3389/fpls.2021.716691
• Publication Date: 2021-09-03T17:01:33Z
• Authors: Zichen Zhang; Lingxiao Zhu; Dongxiao Li; Nan Wang; Hongchun Sun; Yongjiang Zhang; Ke Zhang; Anchang Li; Zhiying Bai; Cundong Li; Liantao Liu
• Keywords: Taproot; Root hair; Lateral root; Root system; Dry weight; Fibrous root system

Phosphorus (P) deficiency is a common challenge in crop production because of its poor mobility through the soil. The root system plays significant role P absorption from soil and initial indicator low levels. However, phenotypic dynamics longevity cotton roots under stress remain unknown. In this study, RhizoPot, an improvised situ observation device, was used to monitor phenotypes seedlings P-deficient (PD) P-replete (PR) conditions. Low reduced accumulation roots, leading dry weight accumulation. Cotton responded by increasing number lateral specific length, branch density, length hairs. Additionally, life span hairs prolonged. also average diameter promoted extension, expanded coverage area, increased range acquisition. Principal component analysis revealed that net growth rate, weight, efficiency, hair taproot daily significantly influenced architecture. Collectively, these results show reduces rate seedling restricts plant growth. Plants respond extending density. This change architecture improves adaptability plants findings study may guide selection varieties with efficient utilization.