Associations Between Developmental Stability, Canalization, and Phenotypic Plasticity in Response to Heterogeneous...

Area of Science:

• Ecology
• Evolutionary Biology
• Plant Science

Background:

• Developmental stability, canalization, and phenotypic plasticity are key to ecological and evolutionary processes.
• These processes are often studied in isolation, leading to unclear relationships.
• Understanding their interplay is crucial, especially in variable environments.

Purpose of the Study:

• To integrate developmental stability, canalization, and phenotypic plasticity.
• To investigate how early experience with temporal water heterogeneity affects these processes.
• To examine their associations in eight plant species under varying water conditions.

Main Methods:

• Plants experienced alternating inundation/drought or moderate water, followed by a plasticity test.
• Measured fluctuating asymmetry (FA) in leaf size.
• Quantified intra- and inter-individual variation (CV_intra, CV_inter) and plasticity index (PI).

Main Results:

• Weak correlations found between FA, CV_intra, and PI.
• Positive correlations between FA and CV_inter emerged under stress.
• CV_inter and PI showed initial positive and later negative correlations, indicating complexity.

Conclusions:

• Plant responses to environmental variation are complex and integrative.
• Inter-individual variation may facilitate plasticity, while canalization suggests convergence.
• FA and CV_intra can indicate faster growth and cooperate during environmental challenges.