Root cortical senescence decreases root respiration, nutrient content and radial water and nutrient transport in barley

• Published in: Plant, cell and environment Vol. 40; no. 8; pp. 1392 - 1408
• Main Authors: Schneider, Hannah M., Wojciechowski, Tobias, Postma, Johannes A., Brown, Kathleen M., Lücke, Andreas, Zeisler, Viktoria, Schreiber, Lukas, Lynch, Jonathan P.
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.08.2017
• Subjects: Adaptiveness; Aliphatic compounds; Barley; Biological Transport; carbon; Cell Respiration; cortex; endodermis; Genetic diversity; genetic variation; Germplasm; Hordeum - cytology; Hordeum - metabolism; Hordeum vulgare; landraces; Lipids; Nitrates; Nitrogen; Nitrogen - metabolism; nitrogen content; Nutrient content; Nutrient transport; Phosphorus; Phosphorus - metabolism; Plant growth; Plant Roots - cytology; Plant Roots - growth & development; Plant tissues; radial transport; Resource allocation; Respiration; root growth; roots; Rye; Segments; Senescence; Soil; Soils; stele; suberin; suberization; Transport; Triticale; Water - metabolism; Wheat; Hordeum vulgare; radial transport; suberin

The functional implications of root cortical senescence (RCS) are poorly understood. We tested the hypotheses that RCS in barley (1) reduces the respiration and nutrient content of root tissue; (2) decreases radial water and nutrient transport; and (3) is accompanied by increased suberization to pro...