Tomato Root Penetration in Soil Requires a Coaction between Ethylene and Auxin Signaling

• Published in: Plant physiology (Bethesda) Vol. 156; no. 3; pp. 1424 - 1438
• Main Authors: Santisree, Parankusam, Nongmaithem, Sapana, Vasuki, Himabindu, Sreelakshmi, Yellamaraju, Ivanchenko, Maria G., Sharma, Rameshwar
• Format: Journal Article
• Language: English
• Published: Rockville, MD American Society of Plant Biologists 01.07.2011
• Subjects: 1-methylcyclopropene; Auxins; Biological and medical sciences; Biological Transport; Biological Transport - drug effects; Cyclopropanes; Cyclopropanes - pharmacology; DEVELOPMENT AND HORMONE ACTION; drug effects; ethylene; ethylene inhibitors; Ethylenes; Ethylenes - metabolism; Fundamental and applied biological sciences. Psychology; Gene expression regulation; Gene Expression Regulation, Plant; Gene Expression Regulation, Plant - drug effects; Genes, Plant; Genes, Plant - genetics; genetics; Gravitropism; Gravitropism - drug effects; growth & development; Hypocotyls; Indoleacetic Acids; Indoleacetic Acids - metabolism; Lycopersicon esculentum - drug effects; Lycopersicon esculentum - growth & development; Mechanotransduction, Cellular; Mechanotransduction, Cellular - drug effects; Mechanotransduction, Cellular - genetics; Meristem; Meristem - drug effects; Meristem - metabolism; metabolism; Mutation; Mutation - genetics; nutrition; pharmacology; Plant growth regulators; Plant physiology and development; Plant Roots; Plant Roots - drug effects; Plant Roots - growth & development; Plants; Receptors; Root growth; Root tips; seed germination; Seedlings; Seedlings - drug effects; Seedlings - growth & development; seeds; Signal Transduction; Signal Transduction - drug effects; Soil; Solanum lycopersicum; tomatoes; Auxin; Root; Ethylene; Tomato; Soils; Penetration; Vegetable crop; Plant physiology; Dicotyledones; Angiospermae; Lycopersicon esculentum; Spermatophyta; Solanaceae

During seed germination, emerging roots display positive gravitropism and penetrate into the soil for nutrition and anchorage. Tomato (Solanum lycopersicum) seeds germinated in the presence of 1-methylcyclopropene (1-MCP), an inhibitor of ethylene action, failed to insert roots into Soilrite and gre...