The DOI matches its Crossref record; 51 of the 51 references it cites were found in a registry or an index.
Overexpression of miR156 in switchgrass (Panicum virgatum L.) results in various morphological alterations and leads to improved biomass production
Open accessAbstract
Summary: Switchgrass (Panicum virgatum L.) has been developed into a dedicated herbaceous bioenergy crop. Biomass yield is a major target trait for genetic improvement of switchgrass. microRNAs have emerged as a prominent class of gene regulatory factors that has the potential to improve complex traits such as biomass yield. A miR156b precursor was overexpressed in switchgrass. The effects of miR156 overexpression on SQUAMOSA PROMOTER BINDING PROTEIN LIKE (SPL) genes were revealed by microarray and quantitative RT‐PCR analyses. Morphological alterations, biomass yield, saccharification efficiency and forage digestibility of the transgenic plants were characterized. miR156 controls apical dominance and floral transition in switchgrass by suppressing its target SPL genes. Relatively low levels of miR156 overexpression were sufficient to increase biomass yield while producing plants with normal flowering time. Moderate levels of miR156 led to improved biomass but the plants were non‐flowering. These two groups of plants produced 58%–101% more biomass yield compared with the control. However, high miR156 levels resulted in severely stunted growth. The degree of morphological alterations of the transgenic switchgrass depends on miR156 level. Compared with floral transition, a lower miR156 level is required to disrupt apical dominance. The improvement in biomass yield was mainly because of the increase in tiller number. Targeted overexpression of miR156 also improved solubilized sugar yield and forage digestibility, and offered an effective approach for transgene containment.
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“The overexpressing lines exhibited increased tillering and also the biomass quantity and quality were improved, which is beneficial for the use of switchgrass as a resource of bioenergy (Fu et al., 2012).”
Background
Metadata
- Authors
- Fu, C., Sunkar, R., Zhou, C., Shen, H., Zhang, J., Matts, J., Wolf, J., Mann, D. G. J., Stewart, C. N., Tang, Y., & Wang, Z.
- Venue
- Plant Biotechnology Journal
- Publisher
- Wiley
- Published
- 2012-01-12
- Volume
- 10
- Issue
- 4
- Pages
- 443-452
- ISSN
- 1467-7644 (ISSN-L)
- 1467-7652
- OpenAlex
- W2153519644
- Cited by
- 309
- References
- 51
- FWCI
- 30.94
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Overexpression of miR156 in switchgrass (Panicum virgatum L.) results in various morphological alterations and leads to improved biomass production. https://app.cochat.ai/papers/10.1111/j.1467-7652.2011.00677.x
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- Fu, C., Sunkar, R., Zhou, C., Shen, H., Zhang, J., Matts, J., Wolf, J., Mann, D. G. J., Stewart, C. N., Tang, Y., & Wang, Z. (2012). Overexpression of miR156 in switchgrass (Panicum virgatum L.) results in various morphological alterations and leads to improved biomass production. Plant Biotechnology Journal. https://doi.org/10.1111/j.1467-7652.2011.00677.x
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