Amphistomy: stomata patterning inferred from 13C content and leaf-side specific deposition of epicuticular wax.

ABSTRACT:

Background and aims

The benefits and costs of amphistomy (AS) vs. hypostomy (HS) are not fully understood. Here, we quantify benefits of access of CO2 through stomata on the upper (adaxial) leaf surface, using 13C abundance in the adaxial and abaxial epicuticular wax. Additionally, a relationship between the distribution of stomata and epicuticular wax (EW) on the opposite leaf sides is studied.

Methods

We suggest that the 13C content of long-chain aliphatic compounds of cuticular wax records the leaf internal CO2 concentration in chloroplasts adjacent to the adaxial and abaxial epidermes. This unique property stems from (i) wax synthesis being located exclusively in epidermal cells and (ii) ongoing wax renewal over the whole leaf lifespan. Compound-specific and bulk wax 13C

SUBMITTER: Askanbayeva B 

PROVIDER: S-EPMC11341673 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature