Li Yuan 's group from Northwest A&F University has made progress in the study of watermelon haploid induction
2023-07-08
(Press-News.org)
Generating haploid plants for the purpose of obtaining pure doubled haploid (DH) lines is widely recognized as one of the most efficient breeding strategies in modern agriculture. Watermelon (Citrullus lanatus), an important fruit crop known for its nutritional value and flavor, has undergone long-term artificial selection resulting in genetic narrowing. Therefore, there is an urgent need for a haploid induction system to enhance traditional breeding methods and facilitate the development of valuable pure DH lines.
In March 2023, the Plant Biotechnology Journal published an online paper titled "Production of double haploid watermelon via maternal haploid induction" by Xu Yong's team from the Beijing Academy of Agricultural and Forestry Sciences (https://doi.org/10.1111/pbi.14045). This report showcases the successful production of DH plants through an in vivo (seed-based) haploid induction system, a pioneering achievement in cucurbit crop breeding. It introduces a new avenue for implementing the haploid breeding system within the Cucurbitaceae family.
Coincidentally, in April 2023, the journal Horticulture Research also published an online paper titled "Creation of a watermelon haploid inducer line via ClDMP3-mediated single fertilization of the central cell" by Yuan Li's team at the College of Horticulture, Northwest A&F University.
Previous studies have demonstrated that irradiation of pollen grains can induce haploids in cucurbit crops, likely due to its preferential fertilization of the central cell over the egg cell. It is known that disruption of the DMP gene can cause single fertilization of the central cell, leading to the development of haploid plants. This study provides a detailed method for creating a watermelon haploid inducer line through ClDMP3 mutation. The cldmp3 mutant successfully induced haploid plants in multiple watermelon genotypes at rates reaching up to 1.12%. These haploid plants were confirmed through the use of fluorescent markers, flow cytometry, molecular markers, and immuno-staining. The creation of this haploid inducer line holds immense potential for significantly advancing watermelon breeding in the future.
###
References
Authors
Xiner Chen, Yuxiu Li, Gongli Ai, Jinfan Chen, Dalong Guo, Zhonghou Zhu, Xuejie Zhu, Shujuan Tian, Jiafa Wang, Man Liu*, Li Yuan*
Affiliations
College of Horticulture, Northwest A&F University
END
[Attachments] See images for this press release:
ELSE PRESS RELEASES FROM THIS DATE:
2023-07-08
Tokyo, Japan – A team led by researchers from Tokyo Metropolitan University studied how microplastics in the environment accumulate heavy metals. As the microplastics spread, so do their toxic cargo. Focusing on polystyrene foam, they collected particles along a river running through Ulaanbaatar, Mongolia. They found significant levels of heavy metals accumulated on the particles, reflecting local land use and industries, as well as surface features like holes and biofilms which help pollutants collect.
The spread of plastic debris into the natural environment is an ecological disaster. As plastic waste makes ...
2023-07-07
Extinct dwarf hippos that once roamed Madagascar lived in forests rather than open grasslands preferred by common hippos on mainland Africa, researchers at the University of Cincinnati discovered.
The findings suggest grasslands that now cover much of the enormous island off the eastern coast of southern Africa were a relatively recent change facilitated by people rather than a natural habitat sustained in part by these famously large vegetarians.
The study was published in the journal Plants, People, Planet.
When Madagascar broke away from Africa’s mainland 150 million years ago, its plants and animals evolved in geographic isolation in the ...
2023-07-07
Researchers have known that a lack of quality sleep can increase a person’s risk of diabetes. What has remained a mystery, however, is why.
Now, new findings from a team of sleep scientists at the University of California, Berkeley, are closer to an answer. The researchers have uncovered a potential mechanism in humans that explains how and why deep-sleep brain waves at night are able to regulate the body’s sensitivity to insulin, which in turn improves blood sugar control the next day.
“These synchronized brain waves act like a finger that flicks the ...
2023-07-07
July 7, 2023 – Patients undergoing bilateral total knee arthroplasty (TKA) are at an increased risk of several types of complications, as compared with matched patients undergoing unilateral TKA, reports a study in The Journal of Bone & Joint Surgery. The journal is published in the Lippincott portfolio in partnership with Wolters Kluwer.
"Patients who underwent simultaneous bilateral TKA were at higher risk of experiencing postoperative complications such ...
2023-07-07
ITHACA, N.Y. -- With artificial intelligence poised to assist in profound scientific discoveries that will change the world, Cornell is leading a new $11.3 million center focused on human-AI collaboration that uses mathematics as a common language.
The Scientific Artificial Intelligence Center, or SciAI Center, is being launched with a grant from the Office of Naval Research and is led by Christopher J. Earls, professor of civil and environmental engineering at Cornell Engineering. Co-investigators include Nikolaos Bouklas, assistant professor ...
2023-07-07
July 7, 2023 – Fifty percent of patients with metastatic prostate cancer experience some level of financial hardship due to their treatment, according to a study in the August issue of The Journal of Urology®, an Official Journal of the American Urological Association (AUA). The journal is published in the Lippincott portfolio by Wolters Kluwer.
"Our findings help in understanding the rates of and risk factors for financial toxicity among patients with advanced prostate cancer, along with the coping mechanisms, including the impact on personal spending, experienced by those reporting higher levels of financial toxicity," ...
2023-07-07
Cancer cells-to-be accumulate a series of specific genetic changes in a predictable and sequential way years before they are identifiable as pre-malignancies, researchers at Stanford Medicine have found. Many of these changes affect pathways that control cell division, structure and internal messaging — leaving the cells poised to go bad long before any visible signs or symptoms occur.
The study is the first to exhaustively observe the natural evolution of the earliest stages of human cancers, starting with ...
2023-07-07
“Here we report an unusual association of t (5; 17) with t (8; 21) in AML and we try to discuss the prognosis of this association and then the treatment.”
BUFFALO, NY- July 7, 2023 – A new research paper was published in Genes & Cancer on June 28, 2023, entitled, “A novel t (5; 17) (q35; q21) associated with t (8; 21) (q22; q22) in a patient with acute myeloid leukemia: case report and review of literature.”
The t (8; 21) (q22; q22) with the resulting RUNX1- RUNX1T1 rearrangement is one of the most common cytogenetic abnormalities in acute myeloid leukemia (AML). It is associated with a favorable prognosis. The t (5; 17) (q35; q21) is an ...
2023-07-07
MADISON – Communicating science to a general audience can be challenging. Successfully conveying research on polarizing topics such as climate change can be even more difficult.
But a new study from University of Wisconsin–Madison researcher Nan Li shows that intentionally integrating art with data visualizations can help non-expert audiences more meaningfully engage with climate change while also bridging political divides in ways that data alone cannot. In fact, data graphs on their own can exacerbate political division on climate change.
As an assistant professor in the Department of Life Sciences Communication, Li studies how innovative visual representations of science ...
2023-07-07
People with low incomes who live in states that expanded Medicaid got more of the kind of health care that can keep them healthier in the long run, compared with similar people in non-expansion states, a new study finds.
They also received more health care overall, specifically clinic visits. But they didn’t crowd out patients covered by Medicare or private insurance such as from an employer, the study finds. Those groups continued to have clinic visits and receive preventive care at the same rate ...
LAST 30 PRESS RELEASES:
[Press-News.org] Li Yuan 's group from Northwest A&F University has made progress in the study of watermelon haploid induction
