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Functional analysis of Arabidopsis and maize transgenic lines overexpressing the ADP-ribose/NADH pyrophosphohydrolase, AtNUDX7

Elizabeth Njuguna (UGent) , Griet Coussens (UGent) , Pia Neyt (UGent) , Stijn Aesaert (UGent) , Veronique Storme (UGent) , Kirin Demuynck (UGent) , Hannes Vanhaeren (UGent) , Stijn Dhondt (UGent) , Yolaine Van Haver, Linus Paul, et al.
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Abstract
The conserved poly(ADP-ribosyl)ation (PAR) pathway consists of three genetic components that are potential targets to modulate the plant's energy homeostasis upon stress with the aim to improve yield stability in crops and help secure food supply. We studied the role of the PAR pathway component ADP-ribose/NADH pyrophosphohydrolase (AtNUDX7) in yield and mild drought stress by using a transgenic approach in Arabidopsis thaliana and maize (Zea mays). Arabidopsis AtNUDX7 cDNA was overexpressed in Arabidopsis and maize by means of the constitutive Cauliflower Mosaic Virus 35S promoter and the strong constitutive Brachypodium distachyon pBdEF1 alpha promoter, respectively. Overexpression of AtNUDX7 in Arabidopsis improved seed parameters that were measured by a novel, automated method, accelerated flowering and reduced inflorescence height. This combination of beneficial traits suggested that AtNUDX7 overexpression in Arabidopsis might enhance the ADP-ribose recycling step and maintain energy levels by supplying an ATP source in the poly(ADP-ribosyl) ation energy homeostasis pathway. Arabidopsis and maize lines with high, medium and low overexpression levels of the AtNUDX7 gene were analysed in automated platforms and the inhibition of several growth parameters was determined under mild drought stress conditions. The data showed that the constitutive overexpression of the Arabidopsis AtNUDX7 gene in Arabidopsis and maize at varying levels did not improve tolerance to mild drought stress, but knocking down AtNUDX7 expression did, however at the expense of general growth under normal conditions.
Keywords
NUDIX HYDROLASES, OXIDATIVE STRESS, POLY(ADP-RIBOSE) POLYMERASE, CELL-DEATH, RESPONSES, GROWTH, TRANSFORMATION, EXPRESSION, PLANTS, PYROPHOSPHATASE, seed yield, flowering time, water deficit, mild drought stress, constitutive promoter

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Citation

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Chicago
Njuguna, Elizabeth, Griet Coussens, Pia Neyt, Stijn Aesaert, Veronique Storme, Kirin Demuynck, Hannes Vanhaeren, et al. 2019. “Functional Analysis of Arabidopsis and Maize Transgenic Lines Overexpressing the ADP-ribose/NADH Pyrophosphohydrolase, AtNUDX7.” International Journal of Developmental Biology 63 (1-2): 45–55.
APA
Njuguna, E., Coussens, G., Neyt, P., Aesaert, S., Storme, V., Demuynck, K., Vanhaeren, H., et al. (2019). Functional analysis of Arabidopsis and maize transgenic lines overexpressing the ADP-ribose/NADH pyrophosphohydrolase, AtNUDX7. INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY, 63(1-2), 45–55.
Vancouver
1.
Njuguna E, Coussens G, Neyt P, Aesaert S, Storme V, Demuynck K, et al. Functional analysis of Arabidopsis and maize transgenic lines overexpressing the ADP-ribose/NADH pyrophosphohydrolase, AtNUDX7. INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY. 2019;63(1-2):45–55.
MLA
Njuguna, Elizabeth et al. “Functional Analysis of Arabidopsis and Maize Transgenic Lines Overexpressing the ADP-ribose/NADH Pyrophosphohydrolase, AtNUDX7.” INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY 63.1-2 (2019): 45–55. Print.
@article{8611923,
  abstract     = {The conserved poly(ADP-ribosyl)ation (PAR) pathway consists of three genetic components that are potential targets to modulate the plant's energy homeostasis upon stress with the aim to improve yield stability in crops and help secure food supply. We studied the role of the PAR pathway component ADP-ribose/NADH pyrophosphohydrolase (AtNUDX7) in yield and mild drought stress by using a transgenic approach in Arabidopsis thaliana and maize (Zea mays). Arabidopsis AtNUDX7 cDNA was overexpressed in Arabidopsis and maize by means of the constitutive Cauliflower Mosaic Virus 35S promoter and the strong constitutive Brachypodium distachyon pBdEF1 alpha promoter, respectively. Overexpression of AtNUDX7 in Arabidopsis improved seed parameters that were measured by a novel, automated method, accelerated flowering and reduced inflorescence height. This combination of beneficial traits suggested that AtNUDX7 overexpression in Arabidopsis might enhance the ADP-ribose recycling step and maintain energy levels by supplying an ATP source in the poly(ADP-ribosyl) ation energy homeostasis pathway. Arabidopsis and maize lines with high, medium and low overexpression levels of the AtNUDX7 gene were analysed in automated platforms and the inhibition of several growth parameters was determined under mild drought stress conditions. The data showed that the constitutive overexpression of the Arabidopsis AtNUDX7 gene in Arabidopsis and maize at varying levels did not improve tolerance to mild drought stress, but knocking down AtNUDX7 expression did, however at the expense of general growth under normal conditions.},
  author       = {Njuguna, Elizabeth and Coussens, Griet and Neyt, Pia and Aesaert, Stijn and Storme, Veronique and Demuynck, Kirin and Vanhaeren, Hannes and Dhondt, Stijn and Van Haver, Yolaine and Paul, Linus and Inzé, Dirk and Nelissen, Hilde and Van Lijsebettens, Maria},
  issn         = {0214-6282},
  journal      = {INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY},
  keywords     = {NUDIX HYDROLASES,OXIDATIVE STRESS,POLY(ADP-RIBOSE) POLYMERASE,CELL-DEATH,RESPONSES,GROWTH,TRANSFORMATION,EXPRESSION,PLANTS,PYROPHOSPHATASE,seed yield,flowering time,water deficit,mild drought stress,constitutive promoter},
  language     = {eng},
  number       = {1-2},
  pages        = {45--55},
  title        = {Functional analysis of Arabidopsis and maize transgenic lines overexpressing the ADP-ribose/NADH pyrophosphohydrolase, AtNUDX7},
  url          = {http://dx.doi.org/10.1387/ijdb.180360mv},
  volume       = {63},
  year         = {2019},
}

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