Structure and Function of Plant Roots

I. Growth processes, structural characteristics.- 1. Cellular organization of root growth.- 2. Growth region of the primary root of maize (Zea mays L.).- 3. Regulation of the mitotic cycle in seedling roots of Vicia faba by environmental factors.- 4. Maturing seed root growth and metabolism.- 5. Development of the mature root growth pattern in the course of seed germination.- 6. Structural and functional aspects of roots of germinating seeds.- 7. Cell proliferation during the development of lateral root primordia.- 8. Argyrophilic nuclear structures in root apices.- 9. Can induced autopolyploidy replace naturally occurring endopolyploidization in roots?.- 10. In situ 3H rRNA/DNA hybridization and silver staining of NORs during growth and differentiation of root cortex cells in the presence or absence of DNA endoreplication.- 11. Abnormalities in the ultrastructure of root cap cells in Raphanus sativus L. induced by actinomycin D, hydroxyurea, ?-naphthylacetic acid and streptomycin.- 12. DNA content in metaxylem of barley roots.- 13. A light microscopic study of the central metaxylem ontoge¬nesis in the root of barley (Hordeum distichum L.).- 14. Correlative morphogenesis of endodermis and xylem elements in the developing barley root.- 15. Division and differentiation during regeneration at the root apex.- 16. Root growth and gravireaetion. Endogenous hormone balance.- 17. ABA effects on root growth and gravireaction of Zea mays L..- 18. Critical study of the elongation and gravireaction of maize roots: light effect.- 19. The differentiation of rhizodermal cells in grasses.- 20. Distribution of plasmodesmata in root epidermis.- 21. Suberization and browning of grapevine roots.- II. Metabolism of roots.- 22. Regulation of enzymes involved in inorganic N metabolism in pea roots.- 23. The effect of manganese nutrition on nitrogen assimilation in roots.- 24. RNA synthesis in the root tip of maize.- 25. Development of protein patterns in the maize root stele.- 26. Glycosidases in the root tip.- 27. Glycosidase isoenzymes in root growth zones.- III. Transport phenomena.- A. Water transport.- 28. The movement of water across the plant root.- 29. Pressure-flow characteristics of the roots of Zea mays.- 30. On the nature of root pressure.- 31. Electroosmotic phenomena in longitudinal transport of solutes in roots.- 32. A possible driving force for the transport of water in roots: the temperature gradient.- 33. Conducting efficiency of roots for the longitudinal flow of water.- B. Ion uptake and transport.- 34. Mechanism of ion uptake across barley roots.- 35. Evidence for an ion uptake controller in Helianthus annuus.- 36. Efficiency of passive movement of ions in the root.- 37. Comparison of some membrane-bound ATPases of glycophytes and halophytes.- 38. Uptake and translocation of sodium in salt-sensitive and salt-tolerant Plantago species.- 39. The effect of CCCP on potassium uptake by root cells.- 40. Specialization of root tissues in ion transport.- 41. Sugar beet root as an organ for sucrose accumulation.- 42. Influence of IAA and ABA on compartmentation in red beet cells (Beta vulgaris L. ssp. vulgaris L. var. rubra).- 43. The effect of calcium on the accumulation and transport of sodium into different parts of barley roots.- 44. Permeability and conductance properties of the maize root epidermis.- 45. Absorption and transport of nutrient cations and anions in maize roots.- 46. Absorption and transport of anions by different roots of Zea mays L..- 47. Metabolic aspects of the transport of ions by cells and tissues of roots.- 48. Accumulation of cations and the functional activity of mitochondria from roots.- 49. Absorption and transport of sulphate in relation to its metabolism.- 50. The effect of phenolic acids on metabolism and nutrient uptake of roots.- 51. Effects of endomyeorrhizal infection on phosphate and cation uptake by Trifolium subterraneum.- IV. Functional integrity of the root system.- 52. Co-ordination of growth phenomena within a root system of intact maize plants.- 53. Relation between root respiration and root activity.- 54. The efficiency of root respiration in different environments.- 55. The influence of mechanical resistance and phosphate supply on morphology and function of corn roots.- 56. Genetical variability of the size of the lucerne root system determined by its electrical capacity.- 57. Genetical variation in efficiency of plant root systems.- V. Responses of roots to stress.- 58. Structure and function in absorption and transport of nutrients.- 59. Some aspects of structural and functional modifications induced by drought in root systems.- 60. Ultrastructure of maize root cells under water stress conditions.- 61. The effect of flooding on metabolism and structure of maize roots.- 62. The response of Zea mays roots to chilling.- 63. The study of root growth under low temperatures at the cell level.- 64. Nitrogen assimilation in wheat in relation to the root zone temperature.- 65. Effect of aluminium toxicity on root morphology of barley.- 66. Effect of heavy metals and chelating agents on potassium uptake of cereal roots.- 67. Transport and metabolism of sulphate under salt stress.- VI. Interaction between roots and shoots.- 68. Shoot: root functional equilibria — thermodynamic stability of the plant system.- 69. Root-shoot relationships in mature grass plants.- 70. Inter-organ control of photosynthesis mediated by emerging nodal roots in young maize plants.- 71. Root-shoot interactions in fruiting tomato plants.- 72. Function of roots in NaCl-stressed bean plants.- 73. The distribution of 14C-photoassimilates in wheat seedlings under root anaerobiosis and DNP application to the roots.- 74. Influence of nitrate and aeration on growth and chemical composition of Zea mays L..- 75. Relationship between the root and above ground parts of different sunflower inbreds regarding the content of some mineral elements.- 76. Response of barley roots to infection by the parasitic fungus Erysiphe graminis DC.- 77. Translocation of growth regulators from roots in relation to the stem apical dominance in pea (Pisum sativum L.) seedlings.