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Small auxin upregulated RNA (SAUR) gene family in maize: Identification, evolution, and its phylogenetic comparison with Arabidopsis, rice, and sorghum

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Journal of Integrative Plant Biology 2014年第2期56卷 133-150页

作者： Yuzhu Chen Xi Hao Jun Cao institute of Life Science Jiangsu University industrial crop institute Henan Academy of Agricultural Sciences

Small auxin-up RNAs （.SAURs） are the early auxin- responsive genes represented by a large multigene family in plants. Here, we identified 79 SAUR gene family members from maize （Zea mays subsp, mays） by a reiterative database search and manual annotation. Phylogenetic analysis indicated that the SAUR proteins from Arabidopsis, rice, sorghum, and maize had divided into 16 groups. These genes were non-randomly distributed across the maize chromosomes, and segmental duplication and tandem duplication contributed to the expansion of the maize .SAUR gene family. Synteny analysis established ortholos^J relationships and functional linkages between SAUR genes in maize and sorghum genomes. We also found that the auxin-responsive elements were conserved in the upstream sequences of maize SAUR members. Selection analyses identified some significant site-specific constraints acted on most SAUR paralogs. Expression profiles based on microarray data have provided insights into the possible functional divergence among members of the .SAUR gene family. Quantitative real-time PCR analysis indicated that some of the 10 randomly selected ZmSAUR genes could be induced at least in maize shoot or root tissue tested. The results reveal a comprehensive overview of the maize .SAUR gene family and may pave the way for deciphering their function during pJant development.

关键词： Evolution expression maize small auxin-up RNA

Engineering thermotolerant plants: a solution to protecting crop production threatened by global warming

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Science Bulletin 2015年第15期60卷 1366-1367页

作者： Jianmin Wan National Key Facility for crop Gene Resources and Genetic Improvement Institute of Crop Science Chinese Academy of Agricultural Sciences

The effects of global warming are the environmental and social changes caused directly or indirectly by human emissions of greenhouse *** of climate change have already been evidenced by observed glacier retreat,chang... 详细信息

关键词：作物生产全球变暖开花植物耐热性威胁保护温室气体排放量非生物胁迫

Functions and Application of the AP2/ERF Transcription Factor Family in crop Improvement

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Journal of Integrative Plant Biology 2011年第7期53卷 570-585页

作者： Zhao-Shi Xu Ming Chen Lian-Cheng Li You-Zhi Ma National Key Facility of crop Gene Resources and Genetic Improvement (NFCRI) Key Laboratory of Crop Genetics and Breeding Ministry of Agriculture Institute of Crop Science Chinese Academy of Agriculture Sciences (CAAS) Beijing 100081 China

Plants have acquired sophisticated stress response systems to adapt to changing environments. It is important to understand plants＇ stress response mechanisms in the effort to improve crop productivity under stressful conditions. The AP2/ERF transcription factors are known to regulate diverse processes of plant development and stress responses. In this study, the molecular characteristics and biological functions of AP2/ERFs in a variety of plant species were analyzed. AP2/ERFs, especially those in DREB and ERF subfamilies, are ideal candidates for crop improvement because their overexpression enhances tolerances to drought, salt, freezing, as well as resistances to multiple diseases in the transgenic plants. The comprehensive analysis of physiological functions is useful in elucidating the biological roles of AP2/ERF family genes in gene interaction, pathway regulation, and defense response under stress environments, which should provide new opportunities for the crop tolerance engineering.

关键词： AP2/ERF gene regulation signal pathway stress tolerance transgenic plant

The impacts of conservation agriculture on crop yield in China depend on specific practices, crops and cropping regions

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The crop Journal 2014年第5期2卷 289-296页

作者： Chengyan Zheng Yu Jiang Changqing Chen Yanni Sun Jinfei Feng Aixing Deng Zhenwei Song Weijian Zhang institute of crop Science Chinese Academy of Agricultural Sciences Ministry of Agriculture institute of crop Science Key Laboratory of Crop Physiology & Ecology Ministry of Agriculture institute of Applied Ecology Nanjing Agricultural University

For smooth and wide application of conservation agriculture(CA), remaining uncertainties about its impacts on crop yield need to be reduced. Based on previous field experiments in China, a meta-analysis was performed to quantify the actual impacts of CA practices(NT: no/reduced-tillage only, CTSR: conventional tillage with straw retention, NTSR: NT with straw retention) on crop yields as compared to conventional tillage without straw retention(CT).Although CA practices increased crop yield by 4.6% on average, there were large variations in their impacts. For each CA practice, CTSR and NTSR significantly increased crop yield by 4.9%and 6.3%, respectively, compared to CT. However, no significant effect was found for NT. Among ecological areas, significant positive effects of CA practices were found in areas with an annual precipitation below 600 mm. Similar effects were found in areas with annual mean air temperature above 5 °C. For cropping regions, CA increased crop yield by 6.4% and 5.5%compared to CT in Northwest and South China, respectively, whereas no significant effects were found in the North China and Northeast China regions. Among crops, the positive effects of CA practices were significantly higher in maize(7.5%) and rice(4.1%) than in wheat(2.9%). NT likely decreased wheat yield. Our results indicate that there are great differences in the impacts of CA practices on crop yield, owing to regional variation in climate and crop types. CA will most likely increase maize yield but reduce wheat yield. It is strongly recommended to apply CA with crop straw retention in maize cropping areas and seasons with a warm and dry climate pattern.

关键词： Conservation agriculture No/reduced tillage Straw recycling Food security

The CRISPR/Cas revolution continues: From efficient gene editing for crop breeding to plant synthetic biology

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Journal of Integrative Plant Biology 2018年第12期60卷 1127-1153页

作者： Jochen Kumlehn Janine Pietralla Goetz Hensel Michael Pacher Holger Puchta Plant Reproductive Biology Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Botanical institute Molecular Biology and Biochemistry Karlsruhe Institute of Technology

Since the discovery that nucleases of the bacterial CRISPR(clustered regularly interspaced palindromic repeat)-associated(Cas) system can be used as easily programmable tools for genome engineering,their application massively transformed different areas of plant biology. In this review, we assess the current state of their use for crop breeding to incorporate attractive new agronomical traits into specific cultivars of various crop plants. This can be achieved by the use of Cas9/12 nucleases for double-strand break induction,resulting in mutations by non-homologous recombinatr e-tion. Strategies for performing such experiments à from Rthe design of guide RNA to the use of different transformation technologies à are evaluated. Furtherweive-more, we sum up recent developments regarding the use of nuclease-deficient Cas9/12 proteins, as DNAbinding moieties for targeting different kinds of enzyme activities to specific sites within the genome. Progress in base deamination, transcriptional induction and transcriptional repression, as well as in imaging in plants, is also discussed. As different Cas9/12 enzymes are at hand, the simultaneous application of various enzyme activities, to multiple genomic sites, is now in reach to redirect plant metabolism in a multifunctional manner and pave the way for a new level of plant synthetic biology.

关键词： From efficient gene editing for crop breeding to plant synthetic biology The CRISPR/Cas revolution continues

Ethylene response factor BnERF2-like (ERF2.4) from Brassica napus *** submergence tolerance and alleviates oxidative damage caused by submergence in Arabidopsis thaliana

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The crop Journal 2016年第3期4卷 199-211页

作者： Yanyan Lv Sanxiong Fu Song Chen Wei Zhang Cunkou Qi institute of industrial crops Jiangsu Academy of Agricultural Sciences Jiangsu Collaborative Innovation Center for Modern crop Production

Ethylene response factor proteins play an important role in regulating a variety of stress responses in plants,but their exact functions in submergence stress are not well *** this study,we isolated BnE RF2.4 from Brassica napus *** study its function in submergence *** expression of the BnE RF2.4 gene in *** and the expression of antioxidant enzyme genes in transgenic Arabidopsis were analyzed by quantitative *** expression of BnE RF2.4 was induced by submergence in *** and the overexpression of BnE RF2.4 in Arabidopsis increased the level of tolerance to submergence and oxidative stress.A histochemical method detected lower levels of H_2O_2,O^(·-)_2and malondialdehyde(MDA) in transgenic *** to the wild type,transgenic lines also had higher soluble sugar content and higher activity of antioxidant enzymes,which helped to protect plants against the oxidative damage caused by *** was concluded that BnE RF2.4 increased the tolerance of plants to submergence stress and may be involved in regulating soluble sugar content and the antioxidant system in defense against submergence stress.

关键词： Ethylene response factor Submergence Oxidative damage Ectopic expression Arabidopsis Antioxidant enzyme

Closing crop yield and efficiency gaps for food security and sustainable agriculture

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Journal of Integrative Agriculture 2021年第2期20卷 343-348页

作者： ZHOU Wen-bin DUAN Feng-ying institute of crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

The world population is estimated to reach 10 billion by 2050. The rise in population coupled with improving living standards will require a doubling of the crop yield to fulfill food demand and livestock feed, which ... 详细信息

关键词： doubling sustainable agriculture

Toward Precision Genome Editing in crop Plants

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Molecular Plant 2020年第6期13卷 811-813页

作者： Jingying Li Huiyuan Li Jilin Chen Lei Yan Lanqin Xia institute of crop Sciences(ICS) Chinese Academy of Agricultural Sciences(CAAS)Beijing 100081China

Precision genome editing through homology-directed repair(HDR)in plants remains very challenging due to the innately low occurrence of HDR and obstacles in the delivery of sufficient donor repair template(DRT)into plant *** single-base substitution,cytidine or adenine base editors have been used successfully in crop plants in recent ***,base editing is constrained by the distance between the targeted base and PAM motif and cannot install predefined transversion mutations or insertions and deletions(indels).Here,we briefly summarize the strategies reported so far for precision genome editing in *** on the recently developed prime editing strategy,which enables gene replacement without double-strand breaks(DSBs)or DRT in both human cells and plants,we provide our perspectives on exploiting diverse strategies to achieve precise targeted gene/allele replacement toward crop improvement and resilience for sustainable agricultural development.

关键词： base install template

Non-conventional peptides in plants:From gene regulation to crop improvement

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The crop Journal 2023年第2期11卷 323-331页

作者： Huan Chen Jingjuan Yu Wen-Xue Li National Engineering Laboratory for crop Molecular Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijing 100193China

Conventional peptides(CPs)and non-conventional peptides(NCPs)are generated from small open reading frames,but most CPs are derived from large ***,which are derived from sequences other than conventional open reading frames or annotated coding sequences regions,function in plant development and adaptation to *** profiling,a technique for studying translational regulation,can be used to identify *** new technique,peptidogenomics,which integrates mass spectrometry and genomics,is becoming more widely used for identifying plant *** recent years,numerous studies have investigated the roles in monocots and dicots of miRNA-derived peptides and upstream open reading frames,which have potential for improving agronomic *** the biological functions of NCPs will advance molecular plant breeding by identifying regulators of plant growth and *** present an overview of NCP identification methods and recent findings about NCP biological functions.

关键词： NCPs Ribosome profiling Peptidogenomics miPEPs uORFs