Plant responses to many biotic and abiotic stresses are orchestrated locally and systemically by signaling molecules known as the jasmonates (JAs). JAs also regulate such diverse processes as pollen maturation and wound responses in Arabidopsis. Here we review recent advances in our understanding of how JA biosynthesis is regulated, the signaling functions of different JAs, and how the JA signa...

be a trilinear form in R, and let JA denote the ideal of R generated by all the partial derivatives of A. A question that arises from the theory of hyperdeterminants (see [GKZ, page 445]) is the following: What can be said about the ideal JA? A reason for this question emerges, among other things, from results which show that information on the depth of JA and, more finely, on the primary decom...

Metsä pidättää tehokkaasti siihen laskeuman mukana tulevia ravinteita. Ravinteiden kier­ to metsässä on yleensä niin suljettua, että niiden huuhtoutuminen laskeumaan verrattuna on vähäistä. Latvusto pidättää osan sadannasta, minkä vuoksi latvuston alla metsikkösadanta on avoimen paikan sadantaa pienempi. Latvustoon pidättynyt vesi haih­ tuu takaisin ilmakehään. Puusto vaikuttaa metsikkö­ sadann...