the life span of an individual? 21. Are there untapped potential benefits to developing perennial forms of currently annual 22. Can we generate a step-change in Cacrop yield through incorporation of a ca or intermediate Ca or crassulacean acid metabolism(CAM)mechanism? 23. How do plants regulate the proportions of storage reserves laid down in various plant parts? 24. What is the theoretical limit of productivity of crops and what are the major factors preventing this being realized? 25. What determines seed longevity and dormancy 26. How can we control flowering time? 27. How do signaling and cross-talk between the different plant hormones operate? 28. Can we develop salt/ heavy metal/drought-tolerant crops without creating invasive plants? 29. Can plants be better utilized for large-scale remediation and reclamation efforts on 30. How can we translate our knowledge of plants and ecosystems into'clever farming practices? 31. Can alternatives to monoculture be found without compromising yields? 32. Can plants be bred to overcome dry land salinity or even reverse it? 33. Can we develop crops that are more resilient to climate fluctuation without yield loss? 34. Can we understand (explain and predict) the succession of plant species in any habitat, and crop varieties in any location, under climate change? 35. To what extent are the stress responses of cultivated plants appropriate for current and future environments 36. Are endogenous plant adaption mechanisms enough to keep up with the pace of man -made environmental change? 37. How can we improve our cultivated plants to make better use of finite resources? 38. How do we grow plants in marginal environments without encouraging invasiveness? 39. How can we use the growing of crops to limit deserts spreading? Most important questions relating to plant species interactions 40. What are the best ways to control invasive species including plants, pests and pathogens? 41. Can we provide a solution to intractable plant pest problems in order to meet increasingly tringent pesticide restrictions? 42. Is it desirable to eliminate all pests and diseases in cultivated plants? 43. What is the most sustainable way to control weeds? 44. How can we simultaneously eradicate hunger and conserve biodiversity 45. How can we move nitrogen-fixing symbioses into non-legumes? 46. Why is symbiotic nitrogen fixation restricted to relatively few plant species? 47. How can the association of plants and mycorrhizal fungi be improved or extended towards 48. How do plants communicate with each other? 49. How can we use our knowledge of the molecular biology of disease resistance to develop novel approaches to disease control? 50. What are the mechanisms for systemic acquired resistance to pathogens?the life span of an individual? 21. Are there untapped potential benefits to developing perennial forms of currently annual crops? 22. Can we generate a step-change in C3crop yield through incorporation of a C4 or intermediate C3/C4 or crassulacean acid metabolism (CAM) mechanism? 23. How do plants regulate the proportions of storage reserves laid down in various plant parts? 24. What is the theoretical limit of productivity of crops and what are the major factors preventing this being realized? 25. What determines seed longevity and dormancy? 26. How can we control flowering time? 27. How do signaling and cross-talk between the different plant hormones operate? 28. Can we develop salt/heavy metal/drought-tolerant crops without creating invasive plants? 29. Can plants be better utilized for large-scale remediation and reclamation efforts on degraded and/or toxic land? 30. How can we translate our knowledge of plants and ecosystems into ‘clever farming’ practices? 31. Can alternatives to monoculture be found without compromising yields? 32. Can plants be bred to overcome dry land salinity or even reverse it? 33. Can we develop crops that are more resilient to climate fluctuation without yield loss? 34. Can we understand (explain and predict) the succession of plant species in any habitat, and crop varieties in any location, under climate change? 35. To what extent are the stress responses of cultivated plants appropriate for current and future environments? 36. Are endogenous plant adaption mechanisms enough to keep up with the pace of man-made environmental change? 37. How can we improve our cultivated plants to make better use of finite resources? 38. How do we grow plants in marginal environments without encouraging invasiveness? 39. How can we use the growing of crops to limit deserts spreading? Most important questions relating to plant species interactions 40. What are the best ways to control invasive species including plants, pests and pathogens? 41. Can we provide a solution to intractable plant pest problems in order to meet increasingly stringent pesticide restrictions? 42. Is it desirable to eliminate all pests and diseases in cultivated plants? 43. What is the most sustainable way to control weeds? 44. How can we simultaneously eradicate hunger and conserve biodiversity? 45. How can we move nitrogen-fixing symbioses into non-legumes? 46. Why is symbiotic nitrogen fixation restricted to relatively few plant species? 47. How can the association of plants and mycorrhizal fungi be improved or extended towards better plant and ecosystem health? 48. How do plants communicate with each other? 49. How can we use our knowledge of the molecular biology of disease resistance to develop novel approaches to disease control? 50. What are the mechanisms for systemic acquired resistance to pathogens?