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BẢN TIN THỨ NĂM 28-4-2022
BẢN TIN THỨ NĂM 28-4-2022
 
Bản tin số 1

Biotechnology and Regulation in the Philippines

 
ISAAA Inc., in partnership with Winrock International through the Boosting Food Safety in the Philippines (B-SAFE) Project, will hold an online seminar titled Biotechnology and Regulation in the Philippines on April 29, 2022, at 10:00 am (GMT+8). The registration is now open to the public.
The webinar will cover the following topics:
  • global status of biotech
  • biotech products, applications, and benefits in the Philippines
  • the Philippine biotechnology regulatory system
This webinar is the first session in a series that aims to increase awareness of accurate, science-based information of different stakeholders about the benefits, possible risks and risk-management approaches, and regulatory system of modern biotechnologies. The first session is designed for the members of the Philippine judiciary, including justices, judges, court personnel, and lawyers. It will also be open to members of the general public who want to enrich their knowledge base about ag-biotech applications in the Philippines and recent developments on its adoption, products and benefits, and regulatory approaches. Participants will also have the opportunity to engage in virtual discussions and share relevant information and experiences with the resource persons and among themselves.
Register for free to join the event. For inquiries, email zbugnosen@isaaa.org.
 
BẢN TIN SỐ 2

MIT Scientists Seek to Develop Self-fertilizing Crops, Combat Climate Change

https://www.isaaa.org/kc/cropbiotechupdate/files/images/427202264049AM.jpg
 
Researchers from various fields of expertise at Massachusetts Institute of Technology (MIT) are working together to reduce agriculture-driven emissions, combat climate change, and produce healthier crops. This multidisciplinary project titled “Revolutionizing agriculture with low-emissions, resilient crops” is one of the five flagship winners in the Climate Grand Challenges competition, which aims to tackle complex climate challenges and deliver timely revolutionary solutions.
“Our team's research seeks to address two connected challenges: first, the need to reduce the greenhouse gas emissions produced by agricultural fertilizer; second, the fact that the yields of many current agricultural crops will decrease, due to the effects of climate change on plant metabolism,” said Christopher Voigt, project lead and professor in MIT's Department of Biological Engineering. “We are pursuing six interdisciplinary projects that are each key to our overall goal of developing low-emissions methods for fertilizing plants that are bioengineered to be more resilient and productive in a changing climate,” he added.
The project includes finding ways to transfer legumes' self-fertilizing ability to cereal crops to revolutionize the sustainability of food production.
Read more from MIT.
 
Bản tin khoa học

Promoter variation in a homeobox gene, CpDll, is associated with deeply lobed leaf in Cucurbita pepo L.

Theoretical and Applied Genetics April 2022; vol. 135: 1223–1234 
 
 

Key message

CpDll, encoding an HD-Zip I transcription factor, positively regulates formation of deeply lobed leaf shape in zucchini, Cucurbita pepo, which is associated with sequence variation in its promoter region.

Abstract

Leaf shape is an important horticultural trait in zucchini (Cucurbita pepo L.). Deeply lobed leaves have potential advantages for high-density planting and hybrid production. However, little is known about the molecular basis of deeply lobed leaf formation in this important vegetable crop. Here, we conducted QTL analysis and fine mapping of the deeply lobed leaf (CpDll) locus using recombinant inbred lines and large F2 populations developed from crosses between the deeply lobed leaf HM-S2, and entire leaf Jin-GL parental lines. We show that CpDll exhibited incomplete dominance for the deeply lobed leaf shape in HM-S2. Map-based cloning provided evidence that CpCll encodes a type I homeodomain (HD)- and Leu zipper (Zip) element-containing transcription factor. Sequence analysis between HM-S2 and Jin-GL revealed no sequence variations in the coding sequences, whereas a number of variations were identified in the promoter region between them. DUAL-LUC assays revealed significantly stronger promoter activity in HM-S2 than that in Jin-GL. There was also significantly higher expression of CpDll in the leaf base of deeply lobed leaves of HM-S2 compared with entire leaf Jin-GL. Comparative analysis of CpDll gene homologs in nine cucurbit crop species (family Cucurbitaceae) revealed conservation in both structure and function of this gene in regulation of deeply lobed leaf formation. Our work provides new insights into the molecular basis of leaf lobe formation in pumpkin/squash and other cucurbit crops. This work also facilitates marker-assisted selection for leaf shape in zucchini breeding.
 
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