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Modulation of Arabidopsis root growth by specialized triterpenes

(2021) NEW PHYTOLOGIST. 230(1). p.228-243
Author
Organization
Abstract
Plant roots are specialized belowground organs that spatiotemporally shape their development in function of varying soil conditions. This root plasticity relies on intricate molecular networks driven by phytohormones, such as auxin and jasmonate (JA). Loss-of-function of the NOVEL INTERACTOR OF JAZ (NINJA), a core component of the JA signaling pathway, leads to enhanced triterpene biosynthesis, in particular of the thalianol gene cluster, in Arabidopsis thaliana roots. We have investigated the biological role of thalianol and its derivatives by focusing on Thalianol Synthase (THAS) and Thalianol Acyltransferase 2 (THAA2), two thalianol cluster genes that are upregulated in the roots of ninja mutant plants. THAS and THAA2 activity was investigated in yeast, and metabolite and phenotype profiling of thas and thaa2 loss-of-function plants was carried out. THAA2 was shown to be responsible for the acetylation of thalianol and its derivatives, both in yeast and in planta. In addition, THAS and THAA2 activity was shown to modulate root development. Our results indicate that the thalianol pathway is not only controlled by phytohormonal cues, but also may modulate phytohormonal action itself, thereby affecting root development and interaction with the environment.
Keywords
Arabidopsis thaliana, auxin, brassinosteroid, jasmonate, NINJA, thalianol, thalianol acyltransferase 2 (THAA2), thalianol synthase, (THAS)

Citation

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MLA
Bai, Yuechen, et al. “Modulation of Arabidopsis Root Growth by Specialized Triterpenes.” NEW PHYTOLOGIST, vol. 230, no. 1, 2021, pp. 228–43, doi:10.1111/nph.17144.
APA
Bai, Y., Fernandez Calvo, P., Ritter Traub, A., Huang, A. C., Morales, S., Bicalho, K., … Pollier, J. (2021). Modulation of Arabidopsis root growth by specialized triterpenes. NEW PHYTOLOGIST, 230(1), 228–243. https://doi.org/10.1111/nph.17144
Chicago author-date
Bai, Yuechen, Patricia Fernandez Calvo, Andrés Ritter Traub, Ancheng C. Huang, Stefania Morales, Keylla Bicalho, Michal Karady, et al. 2021. “Modulation of Arabidopsis Root Growth by Specialized Triterpenes.” NEW PHYTOLOGIST 230 (1): 228–43. https://doi.org/10.1111/nph.17144.
Chicago author-date (all authors)
Bai, Yuechen, Patricia Fernandez Calvo, Andrés Ritter Traub, Ancheng C. Huang, Stefania Morales, Keylla Bicalho, Michal Karady, Laurens Pauwels, Dieter Buyst, Maria Njo, Karen Ljung, José Martins, Steffen Vanneste, Tom Beeckman, Anne Osbourn, Alain Goossens, and Jacob Pollier. 2021. “Modulation of Arabidopsis Root Growth by Specialized Triterpenes.” NEW PHYTOLOGIST 230 (1): 228–243. doi:10.1111/nph.17144.
Vancouver
1.
Bai Y, Fernandez Calvo P, Ritter Traub A, Huang AC, Morales S, Bicalho K, et al. Modulation of Arabidopsis root growth by specialized triterpenes. NEW PHYTOLOGIST. 2021;230(1):228–43.
IEEE
[1]
Y. Bai et al., “Modulation of Arabidopsis root growth by specialized triterpenes,” NEW PHYTOLOGIST, vol. 230, no. 1, pp. 228–243, 2021.
@article{8691924,
  abstract     = {{Plant roots are specialized belowground organs that spatiotemporally shape their development in function of varying soil conditions. This root plasticity relies on intricate molecular networks driven by phytohormones, such as auxin and jasmonate (JA). Loss-of-function of the NOVEL INTERACTOR OF JAZ (NINJA), a core component of the JA signaling pathway, leads to enhanced triterpene biosynthesis, in particular of the thalianol gene cluster, in Arabidopsis thaliana roots.
We have investigated the biological role of thalianol and its derivatives by focusing on Thalianol Synthase (THAS) and Thalianol Acyltransferase 2 (THAA2), two thalianol cluster genes that are upregulated in the roots of ninja mutant plants. THAS and THAA2 activity was investigated in yeast, and metabolite and phenotype profiling of thas and thaa2 loss-of-function plants was carried out.
THAA2 was shown to be responsible for the acetylation of thalianol and its derivatives, both in yeast and in planta. In addition, THAS and THAA2 activity was shown to modulate root development.
Our results indicate that the thalianol pathway is not only controlled by phytohormonal cues, but also may modulate phytohormonal action itself, thereby affecting root development and interaction with the environment.}},
  author       = {{Bai, Yuechen and Fernandez Calvo, Patricia and Ritter Traub, Andrés and Huang, Ancheng C. and Morales, Stefania and Bicalho, Keylla and Karady, Michal and Pauwels, Laurens and Buyst, Dieter and Njo, Maria and Ljung, Karen and Martins, José and Vanneste, Steffen and Beeckman, Tom and Osbourn, Anne and Goossens, Alain and Pollier, Jacob}},
  issn         = {{0028-646X}},
  journal      = {{NEW PHYTOLOGIST}},
  keywords     = {{Arabidopsis thaliana,auxin,brassinosteroid,jasmonate,NINJA,thalianol,thalianol acyltransferase 2 (THAA2),thalianol synthase,(THAS)}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{228--243}},
  title        = {{Modulation of Arabidopsis root growth by specialized triterpenes}},
  url          = {{http://dx.doi.org/10.1111/nph.17144}},
  volume       = {{230}},
  year         = {{2021}},
}

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