Importance of pre‐anthesis anther sink strength for maintenance of grain number during reproductive stage water stress in wheat

• Published in: Plant, cell and environment Vol. 33; no. 6; pp. 926 - 942
• Main Authors: JI, XUEMEI, SHIRAN, BEHROUZ, WAN, JIANLIN, LEWIS, DAVID C., JENKINS, COLIN L. D., CONDON, ANTHONY G., RICHARDS, RICHARD A., DOLFERUS, RUDY
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.06.2010; Blackwell
• Subjects: abortion (plants); Adaptation, Physiological; beta-fructofuranosidase; Biological and medical sciences; Biological Transport; biosynthesis; cell wall invertase; cell walls; cereals; cross pollination; Dehydration; drought; drought tolerance; flowering; Flowers; Flowers - physiology; fructans; Fructans - metabolism; Fundamental and applied biological sciences. Psychology; gene expression; Gene Expression Regulation, Plant; genes; genetic variation; genetics; germplasm; growth & development; inflorescences; metabolism; Organ Size; physiology; plant ovary; pollen; pollen sterility; Pollination; Pollination - physiology; Reproduction; Reverse Transcriptase Polymerase Chain Reaction; Seeds; Seeds - growth & development; starch; Starch - metabolism; Stress, Physiological; sucrose; Sucrose - metabolism; tapetum; Triticum; Triticum - genetics; Triticum - growth & development; Triticum - physiology; water stress; wheat; young microspore; Anther; Monocotyledones; β-Fructofuranosidase; Water stress; Cell wall; Germplasm; Triticum; Gramineae; Drought resistance; pollen sterility; Angiospermae; tapetum; Pollen; young microspore; Reproductive cycle; Grains; Reproductive stage; Enzyme; Plant ecology; Tolerance; cereals; Source sink relationship; Sterility; Glycosylases; cell wall invertase; Pre-anthesis; Glycosidases; Hydrolases; drought tolerance; Spermatophyta

ABSTRACT Reproductive stage water stress leads to spikelet sterility in wheat. Whereas drought stress at anthesis affects mainly grain size, stress at the young microspore stage of pollen development is characterized by abortion of pollen development and reduction in grain number. We identified gene...