March 31,2014 | Vol. 1

Headline

Li Jiayang meets Science editor-in-chief

On January 14th, President Li Jiayang met with Marcia McNutt, editor-in-chief of Science at CAAS headquarter in Beijing, to discuss further cooperation between the two sides in agricultural science and technology. Li briefed the guest about the development of CAAS and China’s agriculture. The two sides exchanged views on commonly concerned issues including global food security, water resource management, land use and the role of science and technology in improving agricultural productivity.
Li appreciated the cooperative outcomes between the two sides. He proposed to strengthen the partnership and hoped the journal would continue to help CAAS enhance its innovation strength and international profile.
McNutt agreed on Li’s proposal and spoke highly of CAAS R&D progress. She added, the journal would be willing to receive more high-level research papers from CAAS.
Founded in 1880, Science is a global renowned academic journal with the largest circulation in the world. In recent years, CAAS has kept close cooperation with the journal in series of activities including co-organizing seminars on academic writing. In 2013, Science released a special supplement to introduce CAAS R&D program and development strategies. Read more >>

Research Update

GPA3 plays an essential role in post-golgi trafficking of storage protins in rice

The research group led by Dr. Wan Jianmin at Institute of Crop Sciences (ICS) of CAAS has achieved an important progress on the elucidation of molecular mechanisms regulating the directional trafficking of dense vesicle (DV) to the protein storage vacuole (PSV) in rice endosperm.
The researchers isolated a storage protein sorting deficient mutant from a 60Co-irradiated mutant pool, named glutelin precursor accumulation3 (gpa3). The gpa3 mutant exhibits a floury endosperm phenotype and accumulates high levels of proglutelins in dry seeds. Combination of cytological and immunocytochemistry studies revealed that in the gpa3 mutant, glutelin-filled DVs are missorted to the apoplast.Read more >>

D53 acting as a repressor regulates strigolactone signalling in rice

Recently, Dr. Wan Jianmin’s lab at Institute of Crop Sciences (ICS) of CAAS has made a major progress on the research of strigolactone signaling pathway. A novel protein DWARF 53 which acts a “switch” to control the strigolactone signaling pathway in regulating the developmental processes of tillering of rice was discovered. Corresponding research paper entitled D14–SCFD3-dependent degradation of D53 regulates strigolactone signalling has been published on the third issue of Nature in December of 2013 (doi:10.1038/nature12878).
The popularization and application of hybrid rice is also called “Second Green Revolution”, which makes great contributions for the grain safety of our country. Read more >>

CAAS Scientists found GmCRY2 regulation of leaf senescence in soybean

The research team led by Dr. Liu Bin at Institute of Crop Sciences (ICS), CAAS discovered that a soybean (Glycine max) cryptochrome 2 (GmCRY2a) regulates leaf senescence, which is a life history trait regulated by light and photoperiods via previously unknown mechanisms. Cryptochromes are evolutionarily conserved flavoproteins that act as blue light receptors or intrinsic components of the circadian oscillator in plants and animals, but the molecular mechanisms of cryptochrome signal transduction remains poorly understood in plants.
This study found that GmCRY2a undergoes blue light-dependent interaction with the soybean bHLH transcription activator GmCIB3 that specifically interacts with the E-box (CANNTG) DNA sequences. Read more >>

Systemic Spread and Propagation of a Plant-Pathogenic Virus in European Honeybees

Tobacco Ring Spot Virus (TRSV), a plant pathogenic virus, may cause infection in honey bees. This new research finding is a collaborative work led by Dr. Li Jilian from the Apiculture Research Institute (ARI) of Chinese Academy of Agricultural Sciences (CAAS) and Dr. Yanping (Judy) Chen from the Bee Research laboratory of Agricultural Research Service, U.S. Department of Agriculture (ARS-USDA).
Pathogen host shift is a major source of new infectious diseases. This study provides the first evidence that honey bees exposed to virus-contaminated pollen could also be infected systemically, indicating potential risks of new viral disease emergence due to host shift events. Read more >>

Breakthrough of PAR1 and PAR2 functions in plant light signal transduction

The research lab led by Dr. Yang Jianping at Institute of Crop Sciences (ICS), CAAS confirmed that PHYTOCHROME RAPIDLY REGULATED 1 (PAR1) and PAR2 redundantly enhance seedling de-etiolation in multiple photoreceptor signaling pathways (Figure A); transcript abundances of PAR1 and PAR2 are repressed by phytochrome A (phyA), phyB, and cryptochrome 1 (CRY1) under Far-red (FR), Red (R), and blue (B) light conditions, respectively. Both PAR1 and PAR2 act downstream of the photomorphogenic repressor CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1), and COP1 mediates the degradation of PAR1 and PAR2 through the 26S proteasome pathway (Figure A- Figure E). Read more >>

International Cooperation Update

Extending partnership on agricultural technology

China and Australia share common challenges on food security and agricultural sustainability. Further strengthen and deepen the cooperation is a major priority for both countries, whereby both sides have to commit significant expertise to improve global food security to meet the challenge of providing the world’s growing population with a sustainable, secure supply of nutritious food from less land and using available scarce resources. Read more >>

Li Jiayang meets Executive Director of Global Crop Diversity Trust

On February 18th, President Li Jiayang met with Marie Haga, Executive Director of Global Crop Diversity Trust at CAAS headquarter in Beijing. The two sides discussed the future cooperation in the field of crop germplasm conservation and utilization.
Li briefed the guest about China’s latest development in agricultural S&T research. As for the collaboration in the conservation and utilization of crop germplasm, he suggested the two sides carry out project-oriented cooperation, making full use of respective comparative advantages in agricultural expertise and fund-raising. Li also proposed to strengthen the partnership by initiating joint research projects and co-organizing seminars based on a MOU between the two sides. Read more >>

Wu Kongming meets GCP Director of CGIAR

On February 13th, CAAS Vice President Wu Kongming met with Jean-Marcel Ribaut, Director of Generation Challenge Program (GCP) of CGIAR at CAAS headquarter in Beijing, to further discuss cooperation in common interested areas.
Wu said, CAAS always much values the strategic partnership between CAAS and CGIAR. Through concerted efforts to collaborate in the Integrated Breeding Platform (IBP) project in the past few years, the two sides have once again proved their success in crop variety breeding.
Wu hoped the two sides continue to explore potentials for future cooperation in crop research and make contribution to global food security. Read more >>

Events

CAAS 2014 annual conference: Restructuring towards a world-class agricultural research institution

On January 13-14, the 2014 annual conference of CAAS was convened in Beijing to wrap up the science and technology achievements in 2013 and set up the development goal of the coming year. President Li Jiayang delivered the working report entitled “Comprehensively deepen reform towards a world-class agricultural research institution” on the conference.
In 2013, China maintained a steady growth of agricultural production and farmers' income. Both grain yield and growth rate of the farmers’ income reached at a high level for the 10th consecutive year. Read more >>

The 1st International Setaria Genetics Conference held in Beijing

Setaria is a genus of grasses in the Poaceae family. From March 10 to 12, the 1st International Setaria Genetics Conference (ISGC-2014) was held at the Beijing International Convention Center in Beijing. The conference was orgnized by Institute of Crop Sciences (ICS), Chinese Academy of Agricultural Sciences (CAAS), and more than 200 conventioneers mainly from China, America, Britain, Australia and Japan participated in this important event. Read more >>