Phytohormones, including auxin, abscisic acid (ABA),
cytokinin (CK), ethylene (ET), and gibberellins (GAs),
have been found in a broad spectrum of microalgal
lineages. Although the functional role of microalgal endogenous
phytohormones remains elusive, molecular
evidence from the oleaginous microalga Nannochloropsis
oceanica suggests that endogenous ABA and CK are
functional and that their physiological effects are similar
to those in higher plants. In this Opinion article, proceeding
from genome-based metabolic reconstruction, we
suggest that modern higher plant phytohormone biosynthesis
pathways originate from ancient microalgae
even though some of the microalgal phytohormone
signaling pathways remain unknown. Dissection and
manipulation of microalgal phytohormone systems
could offer a new view of phytohormone evolution in
plants and present new opportunities in developing
microalgal feedstock for biofuels.
Phytohormones, including auxin, abscisic acid (ABA),cytokinin (CK), ethylene (ET), and gibberellins (GAs),have been found in a broad spectrum of microalgallineages. Although the functional role of microalgal endogenousphytohormones remains elusive, molecularevidence from the oleaginous microalga Nannochloropsisoceanica suggests that endogenous ABA and CK arefunctional and that their physiological effects are similarto those in higher plants. In this Opinion article, proceedingfrom genome-based metabolic reconstruction, wesuggest that modern higher plant phytohormone biosynthesispathways originate from ancient microalgaeeven though some of the microalgal phytohormonesignaling pathways remain unknown. Dissection andmanipulation of microalgal phytohormone systemscould offer a new view of phytohormone evolution inplants and present new opportunities in developingmicroalgal feedstock for biofuels.
การแปล กรุณารอสักครู่..
