Nitrogen and phosphorus availability limit N 2 fixation in bean

Nitrogen and phosphorus availability as limiting factors of N 2 fixation in common bean

Growth, nitrogen fixation and ammonium assimilation in common bean (Phaseolus vulgaris): effect of phosphorus

The impact of phosphorous nutrition on plant growth, symbiotic N2 fixation, ammonium assimilation, carbohydrate and aminoacid accumulation, as well as on nitrogen, phosphorus and ATP content in tissues in common bean (Phaseolus vulgaris) plants was investigated. Plants inoculated with Rhizobium tropici CIAT899 were grown in Leonard jars under controlled conditions, with P-deficient (0 and 0.1mM...

Nitrogen and phosphorus availability in composted and uncomposted poultry litter.

Poultry litter applications to land have been based on crop N requirements, resulting in application of P in excess of plant requirements, which may cause degradation of water quality in the Chesapeake Bay watershed. The effect of litter source (the Delmarva Peninsula and Moorefield, West Virginia) and composting of poultry litter on N mineralization and availability of P in two soil types (san...

Enhancing biological nitrogen fixation in common bean (Phaseolus vulgaris L)

viii CHAPTER 1. GENERAL INTRODUCTION 1 Hypotheses 7 Expected Outcomes 8 References 9 CHAPTER 2. GENOTYPIC VARIATION IN UREIDE CONTENT IN PHASEOLUS VULGARIS L. 19 Abstract 19 Introduction 20 Materials and Methods 21 Results and Discussion 23 Conclusions 28 References 29 CHAPTER 3. SHOOT AND ROOT CONTROL OF UREIDE ACCUMULATION AND PARTITIONING IN PHASEOLUS VULGARIS L. GENOTYPES 46 Abstract 46 Int...

Global changes in the transcript and metabolic profiles during symbiotic nitrogen fixation in phosphorus-stressed common bean plants.

Phosphorus (P) deficiency is widespread in regions where the common bean (Phaseolus vulgaris), the most important legume for human consumption, is produced, and it is perhaps the factor that most limits nitrogen fixation. Global gene expression and metabolome approaches were used to investigate the responses of nodules from common bean plants inoculated with Rhizobium tropici CIAT899 grown unde...