Physiological mechanisms of germination responses

Physiological mechanisms of germination responses

Physiological mech­an­isms of ger­min­a­tion responses

Germination tim­ing, a major determ­in­ant of fit­ness, is extremely sens­it­ive to envir­on­mental con­di­tions but the physiolo­gical mech­an­isms reg­u­lat­ing it are largely unknown. Barua et al. study Arabidopsis thali­ana and find that some attrib­utes, such as sens­it­iv­ity to GA, pre­dict ger­min­a­tion responses to mul­tiple sea­sonal cues while oth­ers, such as ABA sens­it­iv­ity and seed-coat prop­er­ties, pre­dict responses to spe­cific cues. The physiolo­gical mech­an­ism asso­ci­ated with ger­min­a­tion responses to spe­cific envir­on­ments can there­fore influ­ence the poten­tial to adapt to novel com­bin­a­tions of envir­on­mental factors exper­i­enced dur­ing col­on­iz­a­tion or future cli­mate change.

Annals of Botany Office.

The Annals of Botany Office is based at the University of Leicester.

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