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Related Experiment Video

Updated: Jul 11, 2026

Visualization of Leaf and Bracteal Nectaries of Cotton using Digital Microscopy to Improve Scoring Accuracy and Data Preservation

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The complexity of nectar: secretion and resorption dynamically regulate nectar features.

Massimo Nepi¹, Małgorzata Stpiczyńska

¹Department of Environmental Sciences G. Sarfatti, Botany Section, Siena University, via P.A. Mattioli, 53100 Siena, Italy. nepim@unisi.it

Die Naturwissenschaften

|October 9, 2007

Summary

This summary is machine-generated.

Nectar resorption, the recovery of nectar components by flowers, is a key resource strategy. This process, alongside secretion, maintains optimal nectar concentration for pollinators.

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Area of Science:

Plant Physiology
Ecology
Reproductive Biology

Background:

Nectar resorption, a known but under-researched phenomenon, involves flowers reabsorbing nectar.
Previously, it was often considered separate from nectar secretion, primarily in aging flowers.
Recent studies confirm its occurrence across various species using diverse methods.

Purpose of the Study:

To review the physiological and ecological significance of nectar resorption.
To explore nectar resorption as a unified process with nectar secretion.
To understand its role in maintaining nectar homeostasis for pollinators.

Main Methods:

Review of existing literature on nectar resorption.
Analysis of studies demonstrating nectar resorption in senescent and non-senescent flowers.
Synthesis of evidence from direct and indirect measurement methodologies.

Main Results:

Nectar resorption is a resource-recovery strategy, recycling materials from nectar production.
Resorption can occur independently of secretion or concurrently with it.
The combined processes of secretion and resorption maintain nectar homeostasis.

Conclusions:

Nectar production should be viewed as a unified process of secretion and resorption.
This unified process is crucial for maintaining nectar concentration suitable for pollinators.
Further research is needed into the cellular mechanisms and molecular basis of nectar resorption.