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Gan, Susheng
Cornell Faculty Member
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Positions
- Associate Professor, Horticulture (HORT), College of Agriculture and Life Sciences (CALS)
- Associate Professor, Plant Breeding and Genetics (PB&G), College of Agriculture and Life Sciences (CALS)
Research Areas
- agricultural biotechnology
- biochemistry
- bioinformatics
- fruit and vegetable production
- genomics
- horticultural sciences
- molecular biology
- molecular genetics
- postharvest engineering and physiology
- Affiliations
- Research
- Publications
- Teaching
- Service
- Background
- Other
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Affiliations
Research
research overview
- Leaf senescence is an integral part of plant development that limits the yield of certain crops. (Yellowing leaves lose their photosynthetic capability.) Senescence also contributes to much of the postharvest loss of vegetable crops. The long-term goal of my research is to unveil the molecular regulatory mechanisms underlying the leaf yellowing process or senescence so that we can use the molecular findings to devise ways to manipulate senescence genetically for agricultural improvement. Various molecular, genetic and genomic approaches have been employed to clone and analyze genes that are either driving or retarding the senescence program in Arabidopsis and tobacco plants. My ongoing projects include (i) functional characterization of a subset of senescence-specific transcription factor genes in Arabidopsis, (ii) networking leaf senescence transcription factors in Arabidopsis, (iii) map-based positional cloning and characterization of genetic loci that regulate expression of senescence-specific genes, and (iv) development and use of TASSEL tagging system for cloning senescence-inhibiting genes in tobacco plants.
keywords
- Apple
- Arabidopsis
- Genomics
- Kidney Bean
- Maize
- Mitotic Senescence
- Molecular Genetics
- Plant Biotechnology
- Plant Development
- Plant Hormones
- Plant Molecular Biology
- Plant Senescence
- Poplus
- Post-mitotic Senescence
- Rice
- Soybean
- Tobacco
- bioenergy
- biofuel
submitted impact statement
- Understanding and manipulation of plant senescence for agricultural improvement and enhanced bioenergy production
- Regulatory mechanisms of plant development
- Integrated analysis of plant development and gene expression
- Analysis and manipulation of plant senescence for improving horticultural, agronomic, and bioenergy production.
Publications
individual publications
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academic article
- An ABA-regulated and Golgi-localized protein phosphatase controls water loss during leaf senescence in Arabidopsis. . The Plant Journal. 69:667-678. 2012
- Arabidopsis AtNAP regulates fruit senescence.. Journal of Experimental Botany. 63:6139-6147. 2012
- Convergence and divergence in gene expression profiles induced by developmental leaf senescence and 27 senescence-promoting hormonal, pathological and environmental stress treatments. Plant, Cell and Environment. 35:644-655. 2012
- Ethylene produced by Botrytis cinerea can affect early fungal development and can be used as a marker for infection during storage of grapes.. Postharvest Biology and Technology. 66:23-29. 2012
- Towards an integrated view of monocarpic plant senescence. Russian Journal of Plant Physiology. 59:476-478. 2012
- An ABA-AtNAP transcription factor-SAG113 PP2C regulatory chain for controlling dehydration in senescing Arabidopsis leaves.. Plant Physiology. 2011
- AtMYB2 regulates whole plant senescence by inhibiting cytokinin-mediated branching at late stages of development in Arabidopsis.. Plant Physiology. 156:1612-1619. 2011
- Genome-wide analysis of intergenic regions in Arabidopsis thaliana suggests the existence of bidirectional promoters and genetic insulators.. Current Topics in Plant Biology. 12:15-33. 2011
- An Arabidopsis mitogen-activated protein kinase cascade, MKK9-MPK6, plays a role in leaf senescence. Plant Physiology. 150:167-177. 2009
- Differential fruit gene expression in two strawberry cultivars in response to elevated CO2 during storage revealed by a heterologous fruit microarray approach. Postharvest Biol. Technol.. 51:131-140. 2009
- Isolation and characterization of genes associated with shade-induced apple abscission. Molecular Genetics and Genomics. 280:83-92. 2008
- AtNAP, A NAC family transcription factor, has an important role in leaf senescence. The Plant Journal. 46:601-612. 2006
- Effects of cytokinin production under two SAG promoters on senescence and development of tomato plants. Plant Biology. 8:579-586. 2006
- Leaf senescence: signals, execution, and regulation. Current Topics in Developmental Biology. 71:83-112. 2005
- A novel zinc finger protein with a proline-rich domain mediates ABA-regulated seed dormancy in Arabidopsis. Plant Molecular Biology. 54:1-9. 2004
- Transcriptome of Arabidopsis leaf senescence. Plant, Cell and Environment. 27:521-549. 2004
- A gene encoding an acyl hydrolase is involved in leaf senescence in Arabidopsis. Plant Cell. 14:805-815. 2002
- Evidence supporting a role of jasmonic acid in Arabidopsis leaf senescence. Plant Physiology. 128:876-884. 2002
- Isolation and characterization of the CYP71D16 trichome-specific promoter from Nicotiana tabacum L. Journal of Experimental Botany. 53:1891-1897. 2002
- Senescence delay characterization of transgenic Brassica chinensis L. containing an anti-senescence chimeric gene SAG12-IPT. Journal of Plant Physiology & Molecular Biology. 28:379-384. 2002
- Bidirectionalization of polar promoters in plants. Nature Biotechnology. 19:677-679. 2001
- Identical promoter elements are involved in regulation of the OPR1 gene by senescence and jasmonic acid in Arabidopsis. Plant Molecular Biology. 47:595-605. 2001
- Metabolic engineering of plant trichome glands enhances aphid resistance. Nature Biotechnology. 19:371-374. 2001
- Networking senescence-regulating pathways by using Arabidopsis enhancer trap lines. Plant Physiology. 126:707-716. 2001
- Increased cytokinin levels in transgenic PSAG12-IPT tobacco plants have large direct and indirect effects on leaf senescence, photosynthesis and N partitioning. Plant, Cell and Environment. 23:279-289. 2000
- Markers for hypersensitive response and senescence show distinct patterns of expression. Plant Molecular Biology. 39:1243-1255. 1999
- A comparison of the expression patterns of several senescence-associated genes in response to stress and hormone treatment. Plant Molecular Biology. 37:455-469. 1998
- Making sense of senescence: molecular genetic regulation and manipulation of leaf senescence. Plant Physiology. 113:313-319. 1997
- Cytokinins in plant senescence: from spray and pray to clone and play. BioEssays. 18:557-565. 1996
- Inhibition of leaf senescence by autoregulated production of cytokinin. Science. 270:1986-1988. 1995
- Molecular analysis of natural leaf senescence in Arabidopsis thaliana. Physiologia Plantarum. 92:322-328. 1994
- A study on the mechanism of cell wall expansion of cucumber cotyledon. Acta Botanica Sinica. 29:379-387. 1987
- Current status of the studies on liposomes as a means for plant cell engineering. Chinese Journal of Cell Biology. 9:149-154. 1987
- Teaching experience of plant physiology laboratory course. Plant Physiology Communications. 1987:72. 1987
- Change of extensin in cucumber cell wall and its relation with hydroxyproline and isodityrosine. Acta Phytophysiologica Sinica. 12:272-280. 1986
- Progress of plant cell engineering. Today's Graduates. 1:272-279. 1984
- Water potential and chemical potential of water. Plant Physiology Communications. 3:54-56. 1982
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booksection
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chapter
- Senescence. Plant Developmental Biology-Biotechnological Perspectives. 151-169. 2009
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conference paper
- Isolation and characterization of genes associated with shade-induced apple abscission. 9th International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems: Program and Abstracts. 38. 2008
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document part
- Effects of low light on early apple fruit development and retention – Genetic, biochemical, physiological and modeling approaches. 120. 2010
- Control of fruit size by cellular senescence. 26. 2009
- Plant senescence: a paradigm of translational plant sciences. 108-401. 2009
- Towards molecular understanding and genetic manipulation of leaf senescence for improved agricultural and bioenergy production. 21. 2009
- Mitotic and postmitotic senescence in plants 2003
- Comments on the term "molecular sieve" 1983
speaker at Cornell event
Teaching
teaching overview
- I teach four courses directly related to my research: Hort 425 (Postharvest Biology of Horticultural Crops), Hort 625.01 (Advanced Postharvest Physiology), Hort 625.02 / BioPl 453.06 (Plant Senescence), and BioPL 744 (Graduate Research Seminars in Plant Cell & Molecular Biology)
teaching activities
- BIOPL-7490: Graduate Research in Botany - Spring 2013
- HORT-4250: Postharvest Biology of Horticultural Crops - Spring 2013
- HORT-4251: Postharvest Biology of Horticultural Crops Lab - Spring 2013
- HORT-9900: Thesis Research, Doctor of Philosophy - Spring 2013
- BIOPL-7490: Graduate Research in Botany - Fall 2012
- HORT-7000: Graduate Teaching Experience - Fall 2012
- HORT-9900: Thesis Research, Doctor of Philosophy - Fall 2012
- BIOPL-7490: Graduate Research in Botany - Spring 2012
- HORT-6252: Advanced Postharvest Biology: Plant Senescence - Spring 2012
- HORT-9900: Thesis Research, Doctor of Philosophy - Spring 2012
- BIOPL-7490: Graduate Research in Botany - Fall 2011
- HORT-4250: Postharvest Biology of Horticultural Crops - Fall 2011
- HORT-7000: Graduate Teaching Experience - Fall 2011
Service
outreach overview
- In 2007, I have actively participated in numerous outreach activities to show stakeholders and business sectors how research on senescence is important, how our senescence-manipulating technologies have been developed/invented, and how our technologies can be best utilized for our daily life and society. Many didn’t know plant senescence had close relations with their daily lives, but they do after my presentations. Some biotech firms and venture capitalists have expressed their strong interests/intention in commercializing our technologies.
service to the profession
- International Plant Growth Substance Association Member 2004 -
- American Society of Plant Biologists Member 1997 -
- American Association for the Advancement of Science Member 1995 -
- EU CropLife Board Member 2010 - 2015
- Council of the Gordon Research Conference on Plant Senescene & Programmed Cell Death Chairperson 2004 - 2012
- AI-SPER-0203DF692AB0001099A Chairperson 2009
- Council of the Gordon Research Conferences Committee Member 2004 - 2008
- International Society for Plant Molecular Biology Member 1997 - 2008
- National Research Council Academic Program Evaluator/Ranker 2007
- University of Kentucky Research Vice President's Advisory Committee for the Center for Structural Biology Member 2000 - 2002
- Graduate Applicants Screening Committee (Plant Physiology/ Biochemistry/ Molecular Biology Program) at UKy Member 1999 - 2000
- Tobacco Agronomics Advisory Committee at UKy Member 1999 - 2000
reviewer or editor for
Background
education and training
- Ph.D. in Biochemistry, University of Wisconsin-Madison 1995
- M.S. in Plant Physiology, East China Normal University 1985
- B.S. in Biology, East China Normal University 1982
awards and honors
- Recognition for Chairing Gordon Research Conference on Plant Senescence 2008, 2008
- Leading Scientists of the World 2008, 2008
- Award for Advancement of Agricultural Science & Technology, 2007
- Harry Steenbock Predoctoral Fellowship, 1994
- Traineeship, DOE/NSF/USDA Arabidopsis Training Grant, 1994
- The Rockefeller Foundation Ph.D. Fellowship, 1989
- First Class Award for Research Excellence, 1988
Other
research keyword
- Apple
- Arabidopsis
- Genomics
- Kidney Bean
- Maize
- Mitotic Senescence
- Molecular Genetics
- Plant Biotechnology
- Plant Development
- Plant Hormones
- Plant Molecular Biology
- Plant Senescence
- Poplus
- Post-mitotic Senescence
- Rice
- Soybean
- Tobacco
- bioenergy
- biofuel