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Fine-tuning the transcriptional regulatory model of adaptation response to phosphate stress in maize (Zea mays L.)

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Title Fine-tuning the transcriptional regulatory model of adaptation response to phosphate stress in maize (Zea mays L.)
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Creator Pranjal Yadava
Vikram Dayaram
Astha Agarwal
Krishan Kumar
Ishwar Singh
Rachana Verma
Tanushri Kaul
 
Subject Development
Gene expression
Growth
Maize
Phosphate
 
Description Not Available
post green revolution agriculture is based on generous
application of fertilizers and high-yielding genotypes that
are suited for such high input regimes. Cereals, like maize
(Zea mays L.) are capable of utilizing less than 20% of
the applied inorganic phosphate (Pi) - a non-renewable fertilizer
resource. A greater understanding of the molecular
mechanisms underlying the acquisition, transportation and
utilization of Pi may lead to engineering genotypes with
high phosphorus use efficiency. In this study, we carried
out functional domain similarity analysis, promoter analysis
and comparative transcriptional expression profiling of
12 selected Pi responsive genes in the Pi stress tolerant
maize inbred line HKI-163 under sufficient and deficient
Pi conditions. Pi starvation led to significant increase in
root length; marked proliferation of root hairs and lesser
number of crown roots. Eleven genes were significantly
up or down regulated in Pi deficient condition. The putative
acid phosphatase, ZmACP5 expression was up regulated
by 162.81 and 74.40 fold in root and leaf tissues,
respectively. The RNase, ZmRNS1 showed 115 fold up
regulation in roots under Pi deprivation. Among the two
putative high affinity Pi transporters ZmPht1;4 was found
specific to root, whereas ZmPht2 was found to be up regulated
in both root and leaf tissues. The genes involved in Pi homeostasis pathway (ZmSIZ1, SPX1 and Pho2) were
up regulated in root and leaf. In light of the expression
profiling of selected regulatory genes, an updated model
of transcriptional regulation under Pi starvation in maize
has been presented.
Not Available
 
Date 2023-01-20T04:35:19Z
2023-01-20T04:35:19Z
2022-05-04
 
Type Research Paper
 
Identifier Yadava, P., Dayaman, V., Agarwal, A. et al. Fine-tuning the transcriptional regulatory model of adaptation response to phosphate stress in maize (Zea mays L.). Physiol Mol Biol Plants 28, 885–898 (2022). https://doi.org/10.1007/s12298-022-01155-x
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http://krishi.icar.gov.in/jspui/handle/123456789/75552
 
Language English
 
Relation Not Available;
 
Publisher Springer