Reference : Phosphate supply influenced the growth, yield and expression of PHT1 family phosphate...
Scientific journals : Article
Life sciences : Biotechnology
http://hdl.handle.net/2268/262187
Phosphate supply influenced the growth, yield and expression of PHT1 family phosphate transporters in seven millets
English
Maharajan, T. [Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, 600034, India]
Stanislaus, Antony Ceasar mailto [Université de Liège - ULg]
Krishna, T. P. A. [Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, 600034, India]
Ignacimuthu, S. [Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, 600034, India]
2019
Planta
Springer
250
5
1433-1448
Yes (verified by ORBi)
International
0032-0935
1432-2048
Germany
[en] Gene expression ; Millets ; Phenotyping ; Phosphate transporter 1 (PHT1) ; Phosphorous ; Seed yield ; Biological Transport ; Edible Grain ; Phenotype ; Phosphate Transport Proteins ; Phosphates ; Plant Proteins ; Plant Roots ; Plant Shoots
[en] Main conclusion: Phosphate starvation altered the root morphology and phosphate uptake with the induction of PHT1 family transporter genes in root and shoot tissues of seven millets. Abstract: Millets are nutrient-rich cereals majorly cultivated in Asia and Africa. Foxtail millet (FoxM), pearl millet (PeaM), finger millet (FinM), kodo millet (KodM), little millet (LitM), proso millet (ProM), and barnyard millet (BarM) were examined for the influence of external phosphorous (P) supply on phenotypic traits, P uptake, yield, and PHosphate Transporter1 (PHT1) family gene expression. Millet seedlings grown under low Pi condition (LPC) produced significantly lower mean values for all traits except for lateral root length (LRL) and lateral root number (LRN) which were increased under LPC. Under LPC, seed weight (SW) also reduced by > 75% and had significantly lower levels of total P (TP) and Pi contents in leaf and root tissues. Expression dynamics of 12 PHT1 family (PHT1;1–1;12) transporters genes were analyzed in 7 millets. PHT1;2 has been found to be a constitutive transporter gene in all millets. Under LPC, root tissues showed the overexpression of PHT1;2, 1;3, 1;4 and 1;9 in FoxM, PHT1;1, 1;2, 1;3, 1;4, 1;8 and 1;10 in PeaM, PHT1;2 and 1;3 in FinM and ProM and PHT1;3, 1;6 and 1;11 in BarM. In leaf, LPC induced the expression of PHT1;3, 1;4 and 1;6 in FoxM, PHT1;2, 1;3, 1;4 and 1;8 in PeaM, PHT1;2, 1;3 and 1;4 in FinM and KodM, PHT1;2 in LitM and PHT1;4 in ProM and BarnM. This comprehensive study on the influence of P in phenotype, physiology, and molecular responses may help to improve the P uptake and its use efficiency of millets in future. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
http://hdl.handle.net/2268/262187
10.1007/s00425-019-03237-9

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