Article (Scientific journals)
Phosphate supply influenced the growth, yield and expression of PHT1 family phosphate transporters in seven millets
Maharajan, T.; Stanislaus, Antony Ceasar; Krishna, T. P. A. et al.
2019In Planta, 250 (5), p. 1433-1448
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Keywords :
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
Abstract :
[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.
Disciplines :
Biotechnology
Author, co-author :
Maharajan, T.;  Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, 600034, India
Stanislaus, Antony Ceasar ;  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
Language :
English
Title :
Phosphate supply influenced the growth, yield and expression of PHT1 family phosphate transporters in seven millets
Publication date :
2019
Journal title :
Planta
ISSN :
0032-0935
eISSN :
1432-2048
Publisher :
Springer, Germany
Volume :
250
Issue :
5
Pages :
1433-1448
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 July 2021

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