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Home NEWS Science News

Smooth sailing for eggplant: breakthrough in understanding prickle formation

by
August 8, 2024
in Science News
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Scientists have discovered the gene responsible for prickles in eggplants, a trait that complicates farming. Using advanced genetic techniques, they identified the Prickly Eggplant (PE) gene on chromosome 6 and pinpointed SmLOG1 as the key factor. CRISPR-Cas9 gene editing confirmed that disabling SmLOG1 eliminates prickles, paving the way for prickle-free eggplant varieties. This breakthrough not only sheds light on prickle development but also promises to streamline eggplant cultivation and harvesting, benefiting the agricultural industry.

Morphological characterization of prickle in eggplant.

Credit: Horticulture Research

Scientists have discovered the gene responsible for prickles in eggplants, a trait that complicates farming. Using advanced genetic techniques, they identified the Prickly Eggplant (PE) gene on chromosome 6 and pinpointed SmLOG1 as the key factor. CRISPR-Cas9 gene editing confirmed that disabling SmLOG1 eliminates prickles, paving the way for prickle-free eggplant varieties. This breakthrough not only sheds light on prickle development but also promises to streamline eggplant cultivation and harvesting, benefiting the agricultural industry.

Eggplants, a staple crop globally, present significant challenges in cultivation and harvesting due to their prickles. These prickles, which serve as a natural defense mechanism, complicate handling and reduce efficiency in agricultural practices. Addressing these issues is crucial for improving farming outcomes. Consequently, researchers are focused on understanding the genetic basis of prickle formation to develop prickle-free eggplant varieties. Based on these challenges, there is a pressing need to conduct in-depth research and identify solutions for more efficient eggplant cultivation.

Researchers from Jiangsu Normal University, in collaboration with the Chinese Academy of Agricultural Sciences, have made significant strides in this area. Their findings (DOI: 10.1093/hr/uhae134), published in the prestigious journal Horticulture Research on May 10, 2024, focus on the identification of a key gene responsible for the prickly phenotype in eggplants.

The research team employed bulk segregant RNA-sequencing (BSR-seq) and linkage analysis to identify the Prickly Eggplant (PE) gene on chromosome 6, which is crucial for prickle formation in eggplants. They discovered that the SmLOG1 gene, encoding a cytokinin biosynthetic enzyme, plays a pivotal role in this process. Through CRISPR-Cas9 gene editing, they knocked out SmLOG1 in prickly eggplants, resulting in plants completely devoid of prickles. This confirmed the gene’s essential role in prickle development. Furthermore, the study identified a specific SNP in the SmLOG1 promoter region associated with prickle variation, which can be used as a molecular marker for breeding. This groundbreaking research not only advances our understanding of the genetic mechanisms behind prickle formation but also offers practical applications in breeding prickleless eggplant varieties, significantly enhancing agricultural efficiency and reducing the labor required for cultivation and harvesting.

Dr. Lei Zhang, the lead researcher, stated, “This breakthrough in understanding the genetic basis of prickle formation in eggplants is a significant step forward. It not only solves a long-standing agricultural problem but also showcases the power of genetic research in improving crop varieties.”

The identification of the PE gene and its association with prickle formation paves the way for developing prickleless eggplant varieties through marker-assisted selection (MAS). This advancement holds promise for making eggplant cultivation and harvesting more efficient and less labor-intensive, ultimately benefiting farmers and the agricultural industry.

###

References

DOI

10.1093/hr/uhae134

Original Source URL

https://doi.org/10.1093/hr/uhae134

Funding information

This work was supported by the National Natural Science Foundation of China (Nos 32102378 and 32101732), the Young Elite Scientist Sponsorship Program by Jiangsu Association for Science and Technology (No. JSTJ-2022-051), the Natural Science Foundation of Xuzhou City (No. KC23053), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

About Horticulture Research

Horticulture Research is an open access journal of Nanjing Agricultural University and ranked number one in the Horticulture category of the Journal Citation Reports ™ from Clarivate, 2022. The journal is committed to publishing original research articles, reviews, perspectives, comments, correspondence articles and letters to the editor related to all major horticultural plants and disciplines, including biotechnology, breeding, cellular and molecular biology, evolution, genetics, inter-species interactions, physiology, and the origination and domestication of crops.



Journal

Horticulture Research

DOI

10.1093/hr/uhae134

Subject of Research

Not applicable

Article Title

PE (Prickly Eggplant) encoding a cytokinin-activating enzyme responsible for the formation of prickles in eggplant

Article Publication Date

10-May-2024

COI Statement

The authors declare that they have no competing interests.

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