INDEPENDENT NEWS

Scientists discover new class of flavonoids

Published: Wed 18 Sep 2019 10:50 AM
Scientists at Plant & Food Research, along with colleagues at Lincoln University and overseas, have recently discovered a brand new class of flavonoid pigments called “auronidins”.
This ground-breaking discovery, which challenges when the class of flavonoid called anthocyanins evolved in plants, has just been published in the Proceedings of the National Academy of Sciences (PNAS).
Flavonoids are a diverse group of phytonutrients (plant chemicals) found in almost all fruit and vegetables and, along with carotenoids, are responsible for the vivid colours.
Until now, scientists thought that the red anthocyanin flavonoid pigments evolved during the evolution to land by plants from aquatic environments. In this study, scientists looking at liverworts – which may be the closest living relative to the first land plants – found that the red pigment in liverworts are not anthocyanins but an entirely new class of compound. The scientists have named this previously unreported flavonoid class “auronidins”.
The discovery that there are no anthocyanins in liverworts, but rather auronidins, suggests that anthocyanins did not evolve as early as commonly thought but probably arose after the last common ancestor of liverworts and seed plants. These findings raise questions about the changing physiological role of red coloured pigments during plant evolution.
The newly-discovered auronidin pigments have some significant properties. They are fluorescent and range in colour from yellow/orange to purple and could be used in future applications as chemosensors, dye sensitized solar cells and pigments for food and cosmetics.
Additionally, liverworts have a remarkable ability to survive in extreme environments and it’s possible the auronidin pigments may play a role in stress tolerance, helping liverworts cope with land-based stresses such as UV-B light, drought or nutrient deprivation.
This study was supported by grants from the Marsden Fund of New Zealand and the Norwegian NMR Platform.
Read the paper (https://plantandfood.us5.list-manage.com/track/click?u=1b46d14e528ad30bae8b3663c=e828c2d1f9=5b367992d8)

Next in Business, Science, and Tech

RBNZ To Implement $30bn Large Scale Asset Purchase Programme Of NZ Govt Bonds
By: The Reserve Bank of New Zealand
Monetary Policy With Very Low Interest Rates
By: The Reserve Bank of New Zealand
More Snow On Glaciers But No Good News, Say Scientists
By: NIWA
Elevate NZ Venture Fund To Lift Productivity
By: New Zealand Government
New Legislation To Boost Organics
By: New Zealand Government
Misinformation Circulating On Biodiversity Policy
By: Forest And Bird
Govt Backs RBNZ Move To Support Economy With Lower Interest Rates
By: New Zealand Government
Reserve Bank announces further measures to support economy
By: RNZ
Holding Off The COVID-19 Recession – Expert Reaction
By: Science Media Centre
Banking Sector Prepared For Responding To COVID-19
By: The Reserve Bank of New Zealand
Reserve Bank’s ‘unconventional Tools’ Are Conventional Elsewhere
By: Social Credit
RBNZ Survey: Experts Say An Out-of-cycle Rate Cut May Cause Panic
By: Finder
Next Steps Of Govt And Business COVID-19 Response
By: New Zealand Government
NZX falls following US interest rate cut
By: RNZ
Coronavirus and the economy: Responding to Covid-19 with precision
By: RNZ
View as: DESKTOP | MOBILEWe're in BETA! Send Feedback © Scoop Media