A stratagem for primary root elongation under moderate salt stress in the halophyte Schrenkiella parvula

• DOI: 10.1111/ppl.13937
• Publication Date: 2023-05-27T12:15:18Z
• Authors: Keriman Şekerci; Nahoko Higashitani; Rengin Ozgur; Baris Uzilday; Atsushi Higashitani; Ismail Turkan
• Keywords: Elongation; Root hair

Schrenkiella parvula, an Arabidopsis-related halophyte, grows around Lake Tuz (Salt) in Turkey and can survive up to 600 mM NaCl. Here, we performed physiological studies on the roots of S. parvula A. thaliana seedlings cultivated under a moderate salt condition (100 NaCl). Interestingly, germinated grew at 100 NaCl, but germination did not occur concentrations above 200 mM. In addition, primary elongated much faster while being thinner with fewer hair, than NaCl-free conditions. Salt-induced root elongation was due epidermal cell elongation, meristem size meristematic DNA replication were reduced. The expression genes related auxin response biosynthesis also Application exogenous abolished changes suggesting that reduction is main trigger for architectural salinity parvula. seeds, maintained post-germination significantly inhibited. Furthermore, promote even fairly low Compared thaliana, death ROS content salt-stressed plants lower These may be adaptive strategy reach by advancing into deeper soils, impaired stress.