Great fun and food for all!
Very cool discovery!
The international team, headquartered at INRA in Montpellier, used a number of techniques to examine the cells in action. In some cases they fixed cells into place, in others they introduced dyes and in more samples they examined spectra, light signatures of chemicals. What they found was that these strange organelles were producing tannins. Until now, no one has known exactly where in the cell tannins have been made. People could see them stored in the vacuole, another organelle in the plant cell, but couldn’t work out how they got there.
Geneviève Conéjéro said: “Tannins, also called condensed tannins or proanthocyanidins, are thought to play diverse roles such as defense against herbivores and pathogens or ultraviolet protection. They give feeling of pungency in the mouth, the feel of a cat’s tongue licking your hand. Common sense associates tannins with immature unripe fruit, and people ironically say ‘this fruit is too green’. More seriously, plant tannins have been used since the Neolithic times to prevent spoilage of animal skins, and therefore first to manufacture leather laces and soles protecting feet of rough ground.”
Dear Graduate Program Chairs,
I am pleased to announce that beginning Fall 2013, the current childcare reimbursement available to Academic Student Employees (ASEs: TA, Reader, AI, Tutor) will be available to all graduate students. Endorsed by the Chancellor and Provost, the new Graduate Student Childcare Reimbursement Program will provide up to $600 per quarter (including summer) to all graduate students to help defray the childcare costs for dependents aged 0-12 years. The existing reimbursement program was available to graduate students only during the terms they were appointed as ASEs and only for childcare expenses incurred for dependents aged 0-5 years. This expanded program will serve many more graduate student parents thanks to support from the Chancellor and Provost.
To minimize confusion and simplify the process for student parents, administration of programs providing financial assistance for childcare expenses will be consolidated to one access point under the campus WorkLife program, which currently manages the UC Davis Student Parent Child Care Subsidy. More information will be distributed in the coming months. Until Fall, reimbursements should continue to be processed for ASEs as they have been in the past–through the hiring unit employing the graduate student.
Please share this information with students and faculty in your program.
PLANT BIOLOGY SPECIAL SEMINAR
“ Understanding the genomic basis of plant diversification with a phylogenomic approach “
Dr. Angélica Cibrián Jaramillo
Assistant Professor, The National Laboratory of Genomics
for Biodiversity (Langebio), Irapuato, Mexico
Thursday, June 20th, 2013
3001 Plant & Environmental Sciences (PES)
Host: Jeffrey Ross-Ibarra (firstname.lastname@example.org)
Understanding the genetic and genomic basis of plant diversification has been a major goal of evolutionary biologists since Darwin first pondered his “abominable mystery,” the rapid diversification of the angiosperms in the fossil record. We develop and deploy a functional phylogenomic approach that helps identify genes and biological processes putatively involved in species diversification. We assembled a matrix of 22,833 orthologs from 150 species to reconstruct seed plant phylogenetic relationships and to identify gene sets with a unique evolutionary signal. Our analysis of overrepresented biological processes in these sets narrowed down possible genetic mechanisms underlying plant adaptation and diversification. Our functional phylogenomic approach can be applied to any taxa with available sequences to enhance our knowledge of the evolutionary processes underlying biodiversity in general.