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About this book
Covers the occurrence, life history, cytology, anatomy, morphology, and physiology of root hairs, and also analyses the critical role of root hairs in the development of nodules - both rhizobial and actinorrhizal - in the process of symbiotic nitrogen fixation.
Contents
Occurrence and nature of root hairs in higher plants: vascular plants without roothairs; aerial roots and root hairs; number and size; surface area; life span. Structure of root hairs: morphological structure of root hair; cytology and ultrastructure of root hair; cell wall of root hair; cutical in root hair. Origin and development of root hair: ontogeny of root hair; factors influencing development, differentiation and density of root hairs; genetic control of root hair development; biotechnology with root hair. Physiological functions of root hairs - earlier theories: role of root hair in water and mineral uptake; role of root hair in nodule formation; root hair and mycorrhiza; root hair and root parasitism; root hair and infection by mematoses and pathogens; other functions of root hair. Root hairs as 'respiratory gills' - evidences: root respiration; root hair as an entry point for oxygen diffusion; evidences disfavouring water and mineral uptake as the main functions of root hair; evidences in support of the respiratory role as the chief function of root hair; additional experimental evidences. Implications of the respiratory role of root hairs in agriculture and forestry: contribution of root hairs to CO2 evolution; CO2-O2 relationship and their effect on root hair respiration, plant growth and yields; plant responses and soil anaerobiosis; root hair management for higher yields.
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