Lab News (April 2019) A review article, in which our lab participated, on pollen tube navigation is published A Fruitful Journey: Pollen Tube Navigation from Germination to Fertilization. Mark A. Johnson, Jeffrey F. Harper, and Ravishankar Palanivelu Annu Rev Plant Biol. 2019 Apr 29;70:809-837 Abstract of the review article: In flowering plants, pollen tubes undergo…Continue Reading Lab News (April 2019)
Foldable structures and the natural design of pollen grains Eleni Katiforia, Silas Alben, Enrique Cerda, David R. Nelson, and Jacques Dumais PNAS (2010) 170 (17) 7635 – 7639 Abstract: Upon release from the anther, pollen grains of angiosperm flowers are exposed to a dry environment and dehydrate. To survive this process, pollen grains possess a variety…Continue Reading Paper of the Month (October 2017)
(Image source: Anja Geitmann Lab) An amazing set of pioneering papers in plant reproduction were published over the past two months. 1. Nat Commun. 2016 Mar 11;7:10826. doi: 10.1038/ncomms10826. A subunit of the oligosaccharyltransferase complex is required for interspecific gametophyte recognition in Arabidopsis. Müller LM, Lindner H, Pires ND, Gagliardini V, Grossniklaus U. 2. Nature. 2016…Continue Reading Papers of the month (March and April 2016)
How to tame the flood of literature? Elizabeth Gibney Reference: Gibney (2014) Nature 513, 129-130….Continue Reading Paper of the month (April 2015)
.Reactive oxygen species mediate pollen tube rupture to release sperm for fertilization in Arabidopsis Qiaohong Duan, Daniel Kita, Eric A. Johnson, Mini Aggarwal, Laura Gates, Hen-Ming Wu & Alice Y. Cheung Department of Biochemistry and Molecular Biology, University of Massachusetts, 710N. Pleasant Street, Lederle Graduate Research Tower, Amherst, Massachusetts 01003, USA Reference: Duan et al (2014)…Continue Reading Paper of the month (April 2014)
Ethylene signaling is required for synergid degeneration and the establishment of a pollen tube block Völz R, Heydlauff J, Ripper D, von Lyncker L, Groß-Hardt R. Source Center for Plant Molecular Biology (ZMBP), University of Tübingen, 72076 Tübingen, Germany. Reference: Volz et al (2013) Dev Cell, 25 (3) 310–316. Summary In flowering plants, sperm cells are…Continue Reading Paper of the month (August 2013)
A new research article in Plant Reproduction has uncovered evidence in Arabidopsis for pollen tube entry into the synergid cell at a site beside the filliform apparatus, a specialized structure that was thought to be perhaps the only site of pollen tube entry into the synergid cell. In the image above, the location of the…Continue Reading Paper of the month (May 2013)
An exciting research article in Developmental Cell has shed light and provided convincing evidence in support of interactions between egg cell and central cells of the female gametophyte during functional maturation. Mitochondrial GCD1 Dysfunction Reveals Reciprocal Cell-to-Cell Signaling during the Maturation of Arabidopsis Female Gametes Wu JJ*, Peng XB*, Li WW, He R, Xin HP,…Continue Reading Paper of the month (January 2013)
Two exciting research articles in Current Biology have shed light on an intriguing question: what is the temporal relationship between pollen tube repulsion and double fertilization? These two elegant articles have revealed that as long as double fertilization between female gametes and sperm cells has not occurred, pollen tube repulsion by ovules does not initiate,…Continue Reading Papers of the month (July 2012)
Glutamate Receptor-Like Genes Form Ca2+ Channels in Pollen Tubes and Are Regulated by Pistil d-Serine Erwan Michard1,*, Pedro T. Lima1, Filipe Borges1, Ana Catarina Silva1, Maria Teresa Portes1, João E. Carvalho1, Matthew Gilliham2, Lai-Hua Liu3, Gerhard Obermeyer4, and José A. Feijó1,5,† Author Affiliations: 1Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, P-2780-156 Oeiras, Portugal.2Waite…Continue Reading Paper of the month (May 2011)