title: Probing Phosphorus Efficient Low Phytic Acid Content Soybean Genotypes with Phosphorus Starvation in Hydroponics Growth System.
abstract: Phosphorus is an essential nutrient required for soybean growth but is bound in phytic acid which causes negative effects on both the environment as well as the animal nutrition. Lowering of phytic acid levels is associated with reduced agronomic characteristics, and relatively little information is available on the response of soybean plants to phosphorus (P) starvation. In this study, we evaluated the effects of different P starvation concentrations on the phytic acid content, growth, and yield of seven mutant genotypes along with the unirradiated control, JS-335, in a hydroponics growth system. The low phytic acid containing mutant genotypes, IR-JS-101, IR-DS-118, and IR-V-101, showed a relatively high growth rate in low P concentration containing nutrient solution (2 μM), whereas the high P concentration (50 μM) favored the growth of IR-DS-111 and IR-DS-115 mutant genotypes containing moderate phytate levels. The mutant genotypes with high phytic acid content, IR-DS-122, IR-DS-114, and JS-335, responded well under P starvation and did not have any significant effect on the growth and yield of plants. Moreover, the reduction of P concentration in nutrient solution from 50 to 2 μM also reduced the phytic acid content in the seeds of all the soybean genotypes under study. The desirable agronomic performance of low phytic acid containing mutant genotype IR-DS-118 reported in this study suggested it to be a P-efficient genotype which could be considered for agricultural practices under P limiting soils.
authors.affiliation: Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Himachal Pradesh, 173234, India.
authors.forename: Varun
authors.initials: V
authors.lastname: Kumar
authors.affiliation: Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Himachal Pradesh, 173234, India.
authors.forename: Tiratha Raj
authors.initials: TR
authors.lastname: Singh
authors.affiliation: Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110 012, India.|Department of Biotechnology and Genetic Engineering, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India.
authors.forename: Alkesh
authors.initials: A
authors.lastname: Hada
authors.affiliation: Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110 012, India.
authors.forename: Monica
authors.initials: M
authors.lastname: Jolly
authors.affiliation: Department of Biotechnology and Genetic Engineering, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India.
authors.forename: Andy
authors.initials: A
authors.lastname: Ganapathi
authors.affiliation: Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110 012, India. arcs_bio@yahoo.com.
authors.forename: Archana
authors.initials: A
authors.lastname: Sachdev
mesh_terms: D004305:Dose-Response Relationship, Drug; D005838:Genotype; D018527:Hydroponics; D009154:Mutation; D010758:Phosphorus / Q000494:pharmacology*; D010833:Phytic Acid / Q000378:metabolism*; D012639:Seeds / Q000187:drug effects / Q000378:metabolism; D013025:Glycine max / Q000187:drug effects / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*
chemical_list: D010758:Phosphorus; D010833:Phytic Acid
keywords: Genotypes; Hydroponics; P starvation; PCA; Phytic acid