Dr Jennifer Tate

Dr Jennifer Tate staff profile picture

Senior Lecturer in Plant Systematics

Institute of Fundamental Sciences

Contact details
Telephone: +64 (06) 356 9099  ext. 84718
Email: 
Room 5.09, SciD, Turitea

Professional

Professional Biography

Our research focuses on understanding the nature of plant speciation and diversification using a variety of approaches.  We use molecular phylogenetics to test ideas of species relationships, taxonomy, biogeography, and character evolution.  We also use morphological and molecular tools to understand different evolutionary processes affecting plant speciation, including hybridization and polyploidy (whole genome doubling) and plant mating systems.  A recurrent theme of our research is to assess and understand the repeatability of evolution and its effects on morphological and genomic level traits.

Research Expertise

Research Interests

Evolution of Dioecy

Most flowers are hermaphroditic, with both male and female organs contained within a single flower.  Unisexual flowers, with functionally male or female organs only, have evolved repeatedly in angiosperms.  New Zealand has one of the highest proportions of unisexual flowers on separate plants (dioecy), with ~15% of the native flora demonstrating some form of sexual differentiation.  We are examining the developmental and genetic basis of sex expression in ribbonwood (Plagianthus, Malvaceae), which has two endemic dioecious species. 

Using ribbonwood as a model system for the recent evolution of dioecy, we hope to address two fundamental questions:  1) At what point in floral development does the alternate male/female whorl abort? and 2) What genes are responsible for determining gender?  For this project, we are combining detailed microscopic analyses of the male and female flowers with genomic characterization of floral cDNA libraries using next-generation sequencing to gain insight into the earliest stages of gender evolution.  This project is in collaboration with Dr. Barbara Ambrose at the New York Botanical Garden and Dr. Cynthia Skema of the Morris Arboretum.

Consequences of Whole Genome Duplication

Polyploidy, or whole genome doubling, has been a significant evolutionary force in flowering plant history.  We are examining the genomic consequences of polyploidy using Tragopogon (Asteraceae) as a model system for natural and recurrent polyploid formation, in collaboration with Vaughan Symonds (Massey University) and the Soltis lab (University of Florida and Florida Museum of Natural History).  We are particularly interested in understanding the repeatability of evolution as it pertains to 1) the formation of polyploids and 2) the fate of genes duplicated by polyploidy.  To address these issues we are utilizing synthetic polyploid lines of T. miscellus and T. mirus and comparing their genotypes and genomic content to naturally occurring polyploids.  Current projects are aimed at understanding cyto-nuclear interactions in the polyploids, methylation changes in polyploid genomes relative to their progenitors, and the genetic basis for morphological differences in reciprocally formed polyploids.

Phylogenetic Systematics of Malveae (Malvaceae)

Tribe Malveae is the largest in subfamily Malvoideae with approximately 75 genera and over 1000 species.  Various collaborations are ongoing to reconstruct phylogenetic relationships of genera in the tribe and for the tribe itself.  Some of our ongoing projects include: Origins and evolution of dioecy in Lawrencia, in collaboration with Bill and Robyn Barker at the State Herbarium of South Australia; reconstructing a chloroplast DNA phylogeny for the tribe Malveae, in collaboration with Randy Small at the University of Tennessee; speciation and diversification of the high Andean genus Nototriche, in collaboration with Mary Arroyo and Paola Jaraarancio(Chile).

Thematics

Resource Development and Management

Area of Expertise

Field of Research Codes
Biological Sciences (060000): Evolutionary Biology (060300): Host-Parasite Interactions (060307): Phylogeny and Comparative Analysis (060309): Plant Biology (060700): Plant Systematics and Taxonomy (060310)

Keywords

Phylogenetic systematics

Polyploidy

Genome evolution

Taxonomy

Research Projects

Summary of Research Projects

PositionCurrentCompleted
Project Leader19

Research Outputs

Journal

Sehrish, T., Symonds, VV., Soltis, DE., Soltis, PS., & Tate, JA. (2015). Cytonuclear coordination is not immediate upon allopolyploid formation in Tragopogon miscellus (Asteraceae) allopolyploids. PLoS ONE. 10(12)
[Journal article]Authored by: Tate, J.
Badry, MO., Tate, JA., Sheded, MG., El-Naggar, SM., & Hamed, ST. (2015). Macro- and micro-morphological characters of Hibiscus diversifolius Jacq. subsp. diversifolius (Malvaceae): A new record for the flora of Egypt. Feddes Repertorium. 126(1-2), 37-47
[Journal article]Authored by: Tate, J.
Van Etten, ML., Tate, JA., Anderson, SH., Kelly, D., Ladley, JJ., Merrett, MF., . . . Robertson, AW. (2015). The compounding effects of high pollen limitation, selfing rates and inbreeding depression leave a New Zealand tree with few viable offspring. Annals of Botany. 116(5), 833-843
[Journal article]Authored by: Robertson, A., Tate, J.
Prebble, JM., Tate, JA., Meudt, HM., & Vaughan Symonds, V. (2015). Microsatellite markers for the New Zealand Endemic Myosotis Pygmaea Species group (boraginaceae) amplify across species. Applications in Plant Sciences. 3(6)
[Journal article]Authored by: Symonds, V., Tate, J.
Sehrish, T., Symonds, VV., Soltis, DE., Soltis, PS., & Tate, JA. (2014). Gene silencing via DNA methylation in naturally occurring Tragopogon miscellus (Asteraceae) allopolyploids. BMC Genomics. 15(1)
[Journal article]Authored by: Symonds, V., Tate, J.
Van Etten, ML., Houliston, GJ., Mitchell, CM., Heenan, PB., Robertson, AW., & Tate, JA. (2014). Sophora microphylla (fabaceae) microsatellite markers and their utility across the genus. Applications in Plant Sciences. 2(3)
[Journal article]Authored by: Robertson, A., Tate, J.
Van Etten, ML., Robertson, AW., & Tate, JA. (2013). MICROSATELLITE MARKERS FOR THE NEW ZEALAND ENDEMIC TREE FUCHSIA EXCORTICATA (ONAGRACEAE). APPLICATIONS IN PLANT SCIENCES. 1(10),
[Journal article]Authored by: Robertson, A., Tate, J.
Buggs, RJA., Chamala, S., Wu, W., Tate, JA., Schnable, PS., Soltis, DE., . . . Barbazuk, WB. (2012). Rapid, repeated, and clustered loss of duplicate genes in allopolyploid plant populations of independent origin. Current Biology. 22(3), 248-252
[Journal article]Authored by: Tate, J.
McLay, TGB., Tate, JA., & Vaughan Symonds, V. (2012). Microsatellite markers for the endangered root holoparasite Dactylanthus taylorii (Balanophoraceae) from 454 pyrosequencing. American Journal of Botany. 99(8)
[Journal article]Authored by: Symonds, V., Tate, J.
Buggs, RJA., Chamala, S., Wu, W., Tate, JA., Schnable, PS., Soltis, DE., . . . Barbazuk, WB. (2012). Rapid, repeated, and clustered loss of duplicate genes in allopolyploid plant populations of independent origin. Current Biology. 22(3), 248-252
[Journal article]Authored by: Tate, J.
Tate, JA. (2011). The status of Urocarpidium (Malvaceae): Insight from nuclear and plastid-based phylogenies. Taxon. 60(5), 1330-1338
[Journal article]Authored by: Tate, J.
Wagstaff, SJ., & Tate, JA. (2011). Phylogeny and character evolution in the New Zealand endemic genus Plagianthus (Malveae, Malvaceae). Systematic Botany. 36(2), 405-418
[Journal article]Authored by: Tate, J.
Malinska, H., Tate, J., Mavrodiev, E., Matyasek, R., Lim, K., Leitch, A., . . . Kovarik, A. (2011). Ribosomal RNA genes evolution in Tragopogon: A story of New and Old World allotetraploids and the synthetic lines. Taxon. 60(2), 348-354
[Journal article]Authored by: Tate, J.
Buggs, RJA., Zhang, L., Miles, N., Tate, JA., Gao, L., Wei, W., . . . Soltis, DE. (2011). Transcriptomic shock generates evolutionary novelty in a newly formed, natural allopolyploid plant. Current Biology. 21(7), 551-556
[Journal article]Authored by: Tate, J.
Wagstaff, SJ., Molloy, BPJ., & Tate, JA. (2010). Evolutionary significance of long-distance dispersal and hybridisation in the New Zealand endemic genus Hoheria (Malvaceae). Australian Systematic Botany. 23(2), 112-130
[Journal article]Authored by: Tate, J.
Malinska, H., Tate, JA., Matyasek, R., Leitch, AR., Soltis, DE., Soltis, PS., . . . Kovarik, A. (2010). Similar patterns of rDNA evolution in synthetic and recently formed natural populations of Tragopogon (Asteraceae) allotetraploids. BMC EVOLUTIONARY BIOLOGY. 10,
[Journal article]Authored by: Tate, J.
Buggs, RJ., Doust, AN., Tate, JA., Koh, J., Soltis, KA., Feltus, FA., . . . Soltis, D. (2009). Gene loss and silencing in Tragopogon miscellus (Asteraceae): Comparison of natural and synthetic allotetraploids. Heredity. 103(1), 73-81
[Journal article]Authored by: Tate, J.
Tate, JA., Acosta, MC., McDill, J., Moscone, EA., Simpson, BB., & Cocucci, AA. (2009). Phylogeny and character evolution in nierembergia (solanaceae): Molecular, morphological, and cytogenetic evidence. Systematic Botany. 34(1), 198-206
[Journal article]Authored by: Tate, J.
Tate, JA., Symonds, VV., Doust, AN., Buggs, RJA., Mavrodiev, E., Majure, LC., . . . Soltis, DE. (2009). Synthetic polyploids of Tragopogon miscellus and T. mirus (Asteraceae): 60 Years after Ownbey's discovery. American Journal of Botany. 96(5), 979-988
[Journal article]Authored by: Symonds, V., Tate, J.
Tate, JA., Joshi, P., Soltis, KA., Soltis, PS., & Soltis, DE. (2009). On the road to diploidization? Homoeolog loss in independently formed populations of the allopolyploid Tragopogon miscellus (Asteraceae). BMC Plant Biology. 9
[Journal article]Authored by: Tate, J.
Lim, KY., Soltis, D., Soltis, P., Tate, JA., Matyasek, R., Srubarova, H., . . . Leitch, AR. (2008). Rapid chromosome evolution in recently formed polyploids in Tragopogon (Asteraceae). PLoS ONE. 3, 1-13
[Journal article]Authored by: Tate, J.
Matyasek, R., Tate, JA., Lim, YK., Srubarova, H., Koh, J., Leitch, AR., . . . Kovarik, A. (2007). Concerted evolution of rDNA in recently formed tragopogon allotetraploids is typically associated with an inverse correlation between gene copy number and expression. Genetics. 176(4), 2509-2519
[Journal article]Authored by: Tate, J.
Tate, JA., Ni, Z., Scheen, AC., Koh, J., Gilbert, CA., Lefkowitz, D., . . . Soltis, DE. (2006). Evolution and expression of homeologous loci in Tragopogon miscellus (Asteraceae), a recent and reciprocally formed allopolyploid. Genetics. 173(3), 1599-1611
[Journal article]Authored by: Tate, J.
Simpson, B., Tate, J., & Weeks, A. (2005). The biogeography of Hoffmannseggia (Leguminosae, Caesalpinioideae, Caesalpinieae): A tale of many travels. Journal of Biogeography. 32, 15-27
[Journal article]Authored by: Tate, J.
Tate, J., Aguilar, J., Wagstaff, S., La Duke, J., Bodo Slotta, T., & Simpson, B. (2005). Phylogenetic relationships within the tribe Malveae (Malvaceae, subfamily Malvoideae) as inferred from ITS sequence data. American Journal of Botany. 92(4), 584-602
[Journal article]Authored by: Tate, J.
Simpson, B., Tate, J., & Weeks, A. (2004). Phylogeny and character evolution of Hoffmannseggia (Caesalpinieae: Caesalpinioideae: Leguminosae). Systematic Biology. 29(4), 933-946
[Journal article]Authored by: Tate, J.
Soltis, D., Soltis, P., Pires, JC., Kovarik, A., Tate, J., & Mavrodiev, E. (2004). Recent and recurrent polyploidy in Tragopogon (Asteraceae): cytogenetic, genomic and genetic comparisons. Biological Journal of the Linnean Society. 82, 485-501
[Journal article]Authored by: Tate, J.
Tate, J., & Simpson, B. (2004). Breeding system evolution in Tarasa (Malvaceae) and selection for reduced pollen grain size in the polyploid species. American Journal of Botany. 91(2), 207-213
[Journal article]Authored by: Tate, J.
Tate, J. (2003). Andeimalva, a new genus of Malvaceae from Andean South America. Lundellia. 6, 10-18
[Journal article]Authored by: Tate, J.
Tate, J., & Simpson, B. (2003). Paraphyly of Tarasa (Malvaceae) and diverse origins of the polyploid species. Systematic Botany. 28(4), 723-737
[Journal article]Authored by: Tate, J.
Soltis, D., Soltis, P., & Tate, J. (2003). Advances in the study of polyploidy since plant speciation. New Phytologist. 161, 173-191
[Journal article]Authored by: Tate, J.

Book

Tate, J., Soltis, D., & Soltis, P. (2005). Polyploidy in plants. In TR. Gregory (Ed.) The Evolution of the Genome. (pp. 371 - 426). : Elsevier
[Chapter]Authored by: Tate, J.

Conference

Prebble, JM., Symonds, VV., Meudt, HM., & Tate, JA. (2014, November). The population genetics of rarity in New Zealand plants: a case study delimiting species in recent radiations using Myosotis (Boraginaceae). Presented at Australasian Systematic Botany Society conference. Palmerston North, New Zealand.
[Conference Oral Presentation]Authored by: Symonds, V., Tate, J.
Pearson, S., Symonds, VV., Sultan, A., Robertson, AW., van Etten, M., & Tate, JA. (2014). Host race specificity in the pygmy mistletoe Korthalsella salicornioides in New Zealand.. Poster session presented at the meeting of Australasian Systematic Botany Society conference. Palmerston North, New Zealand
[Conference Poster]Authored by: Robertson, A., Symonds, V., Tate, J.
Ansari, HA., Joshi, P., Ellison, NW., & Tate, JA. (2014, November). Molecular cytogenetic characterization of ribbonwood and lacebark in New Zealand. Presented at Australasian Systematic Botany Society conference. Palmerston North New Zealand.
[Conference Oral Presentation]Authored by: Joshi, P., Tate, J.
Tate, JA., Sehrish, T., Soltis, DE., Soltis, PS., & Cox, MP. (2014, November). Exploring the floral transcriptome of reciprocally formed Tragopogon miscellus (Asteraceae) allopolyploids. Presented at Australasian Systematic Botany Society conference. Palmerston North, New Zealand.
[Conference Oral Presentation]Authored by: Cox, M., Tate, J.
Tate, JA., & Symonds, VV. (2014, November). Battle of the genomes following hybridization and whole genome duplication in Tragopogon (Asteraceae). Presented at New Zealand Ecological Society conference. Palmerston North, New Zealand.
[Conference Oral Presentation]Authored by: Symonds, V., Tate, J.
Van Etten, M., Tate, J., & Robertson, AW. (2014, June). The consequences of pollinator declines on the quantity and quality of offspring in two New Zealand tree species. Presented at Evolution 2014. Raleigh, North Carolina.
[Conference Oral Presentation]Authored by: Robertson, A., Tate, J.
Tate, JA., Sehrish, T., Symonds, VV., Soltis, DE., & Soltis, PS. (2013, June). Biased maternal expression and paternal loss of rbcS in allopolyploid Tragopogon miscellus: insight into cytonuclear coordination. Presented at Evolution 2013 meeting. Snowbird, Utah.
[Conference Oral Presentation]Authored by: Symonds, V., Tate, J.
Tate, JA., Skema, C., McLay, TB., Wagstaff, S., Barker, WR., & Barker, RB. (2012, July). Multiple origins of dioecy or multiple origins of hermaphroditism?. Presented at Evolution 2012 meeting. Ottawa Canada.
[Conference Oral Presentation]Authored by: Tate, J.
Skema, C., & Tate, J. (2010). When males stop being females & vice versa: A case study of dioecious floral development in ribbonwood (Plagianthus, Malvaceae). Poster session presented at the meeting of 2010 Australian Systematic Botany Society Conference. Lincoln University, Canterbury, New Zealand
[Conference Poster]Authored by: Tate, J.
Tate, J., Skema, C., McLay, T., Wagstaff, S., Jordan, G., & Barker, W. (2010, November). Evolution of gender dimorphism in Australasian Malveae (Malvoideae, Malvaceae): Boys and girls jumping the ditch?. Presented at 2010 Australian Systematic Botany Society Conference. Lincoln University, Canterbury, New Zealand.
[Conference Oral Presentation]Authored by: Tate, J.
Tate, J., & McLay, T. (2010, June). Phylogeny and breeding system evolution in Australasian mallows (Malvaceae). Presented at Evolution 2010. Portland State University, Portland, Oregon.
[Conference Oral Presentation]Authored by: Tate, J.
Tate, JA., Symonds, VV., Doust, AN., Buggs, RJ., Mavrodiev, E., Soltis, P., . . . Soltis, D. (2008, June). Synthetic polyploids of Tragopogon (Asteraceae): 50+ years after Ownbeys discovery. Presented at Evolution 2008. University of Minnesota, Minneapolis, MN.
[Conference Oral Presentation]Authored by: Symonds, V., Tate, J.
Tate, JA., Biggeri, A., Soltis, KA., Soltis, P., & Soltis, D. (2007, July). When the honeymoon ends: The fate of duplicated genes in allotetraploid Tragopogon miscellus (Asteraceae). Presented at Botany and Plant Biology 2007 Joint Congress. Chicago, Il.
[Conference Oral Presentation]Authored by: Tate, J.

Other

Tate, JA. (2010, March). Hybridism and species in NZs mallows lacebarks and ribbonwoods. In Wanganui Museum Botanical Group. Presented at Wanganui, NZ.
[Oral Presentation]Authored by: Tate, J.
Tate, JA. (2010). Replaying the tape: Polyploid genome evolution in Tragopogon (asteraceae). Presented at Massey University, NZ.
[Oral Presentation]Authored by: Tate, J.
Tate, JA. (2008, February). When the honeymoon ends: The fate of duplicated genes in allotetraploid Tragopogon miscellus (Asteraceae). In Plant Biology Meeting. Presented at Massey University, Palmerston North, NZ.
[Oral Presentation]Authored by: Tate, J.

Supervision and Teaching

Summary of Doctoral Supervision

PositionCurrentCompleted
Supervisor21
CoSupervisor22

Teaching

120.101 (Biology of Plants)

120.303 (Plant Biodiversity)

Courses Coordinated

Completed Doctoral Supervision

Supervisor of:

CoSupervisor of:

  • 2017 - Jessie Prebble- PhD
    Species delimitation and the population genetics of rare plants: A case study using the New Zealand native pygmy forget-me-not group (Myosotis; Boraginaceae)
  • 2014 - Amir Sultan- PhD
    Systematics, Biology and Ecology of New Zealand's Pygmy Mistletoes (Korthalsella : Viscaceae)

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