When it comes to plant growth and development, one hormone is responsible for it all: auxin. New Washington University in St. Louis research has uncovered a mechanism by which it can affect a plant in a myriad of ways.
Biologist Lucia Strader in Arts & Sciences discovered a cellular transporter that links two of the most powerful hormones in plant development — auxin and cytokinin — and shows how they regulate root initiation and progression. Understanding why and how plants make different types of root architectures can help develop plants that better cope with distinct soil conditions and environments.
Biologists in Arts & Sciences have mapped the crystal structure of a key protein that makes the metabolites responsible for the bitter taste in cruciferous plants like mustard and broccoli. The results could be used along with ongoing breeding strategies to manipulate crop plants for nutritional and taste benefits.
Researchers led by Kenneth M. Olsen in Arts & Sciences used a new imaging technique to reveal a takeover strategy that has worked for weedy rice over and over again: roots that minimize below-ground contact with other plants.
Autophagy has a remarkable influence on a plant’s metabolism even under healthy growing conditions, according to new research led by Richard Vierstra in Arts & Sciences.
In a sneak attack, some pathogenic microbes manipulate plant hormones to gain access to their hosts undetected. Biologists at Washington University in St. Louis have exposed one such interloper by characterizing the unique biochemical pathway it uses to synthesize auxin, a central hormone in plant development.
The American Society of Plant Biologists (ASPB) has named Washington University in St. Louis’ Richard Vierstra a fellow of ASPB.
Richard D. Vierstra was installed as the inaugural George and Charmaine Mallinckrodt Professorship at a ceremony held March 7 in Holmes Lounge. The professorship resides in Arts & Sciences and is designated for the field of plant biology, an area of great strength, and even greater potential, at Washington University.
Some clover species have two forms, one of which releases cyanide to discourage nibbling by snails and insects and the other of which does not. A scientist at Washington University in St. Louis found that this “polymorphism” has evolved independently in six different species of clover, each time by the wholesale deletion of a gene. The clover species are in a sense predisposed to develop this trait, suggesting that evolution is not entirely free form but instead bumps up against constraints.
Richards has observed the inheritance of epigenetic factors in plants.Eric Richards, Ph.D., professor of biology at Washington University in St. Louis, writing in the May issue of Nature Reviews Genetics, analyzes recent and past research in epigenetics and the history of evolution and proposes that epigenetics should be considered a form of soft inheritance, citing examples in both the plant and mammalian kingdoms.