The mysterious Mauritian red nectar: a selective toxicant?

Area of Science:

• Biochemistry
• Chemical Ecology
• Plant Biology

Background:

• Mauritian bird-pollinated plants exhibit unique red nectar.
• Aurones are hypothesized to be responsible for this red coloration.

Purpose of the Study:

• To investigate the potential role of aurones as a deterrent against nectar robbers.
• To utilize computational structure-activity relationship models to test this hypothesis.

Main Methods:

• Employed knowledge-based computational structure-activity relationship (SAR) models.
• Analyzed the chemical properties of aurones in relation to known deterrent compounds.

Main Results:

• Computational models suggest aurones possess properties consistent with repellent compounds.
• The specific aurone structure may deter nectar-robbing or herbivorous mammals.

Conclusions:

• Aurones in red nectar could serve a dual function: attracting birds and repelling mammals.
• This finding offers insights into plant-pollinator and plant-herbivore interactions.