A promoter toolbox for tissue-specific expression supporting translational research in cassava (Manihot esculenta)
Zierer W, Anjanappa RB, Lamm C, Chang SH, Gruissem W, Sonnewald U (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 13
DOI: 10.3389/fpls.2022.1042379
Abstract
There is an urgent need to stimulate agricultural output in many tropical and subtropical countries of the world to combat hunger and malnutrition. The starchy crop cassava (Manihot esculenta), growing even under sub-optimal conditions, is a key staple food in these regions, providing millions of people with food. Cassava biotechnology is an important technique benefiting agricultural progress, but successful implementation of many biotechnological concepts depends on the availability of the right spatiotemporal expression tools. Yet, well-characterized cassava promoters are scarce in the public domain. In this study, we investigate the promoter activity and tissue specificity of 24 different promoter elements in stably transformed cassava plants. We show that many of the investigated promoters, especially from other species, have surprisingly low activity and/or tissue specificity, but feature several promoter sequences that can drive tissue-specific expression in either autotrophic-, transport- or storage tissues. We especially highlight pAtCAB1, pMePsbR, and pSlRBCS2 as strong and specific source promoters, pAtSUC2, pMeSWEET1-like, and pMeSUS1 as valuable tools for phloem and phloem parenchyma expression, and pStB33, pMeGPT, pStGBSS1, as well as pStPatatin Class I, as strong and specific promoters for heterotrophic storage tissues. We hope that the provided information and sequences prove valuable to the cassava community by contributing to the successful implementation of biotechnological concepts aimed at the improvement of cassava nutritional value and productivity.
Authors with CRIS profile
Wolfgang Zierer
Lehrstuhl für Biochemie
Christian Lamm
Lehrstuhl für Biochemie
Uwe Sonnewald
Lehrstuhl für Biochemie
Involved external institutions
Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich
Switzerland (CH)
National Chung Hsing University
Taiwan (TW)
Switzerland (CH)
National Chung Hsing University
Taiwan (TW)
How to cite
APA:
Zierer, W., Anjanappa, R.B., Lamm, C., Chang, S.-H., Gruissem, W., & Sonnewald, U. (2022). A promoter toolbox for tissue-specific expression supporting translational research in cassava (Manihot esculenta). Frontiers in Plant Science, 13. https://doi.org/10.3389/fpls.2022.1042379
MLA:
Zierer, Wolfgang, et al. "A promoter toolbox for tissue-specific expression supporting translational research in cassava (Manihot esculenta)." Frontiers in Plant Science 13 (2022).
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