Pore size regulates operating stomatal conductance, while stomatal densities drive the partitioning of conductance between leaf sides.

ABSTRACT:

Background and aims

Leaf gas exchange is influenced by stomatal size, density, distribution between the leaf adaxial and abaxial sides, as well as by pore dimensions. This study aims to quantify which of these traits mainly underlie genetic differences in operating stomatal conductance (gs) and addresses possible links between anatomical traits and regulation of pore width.

Methods

Stomatal responsiveness to desiccation, gs-related anatomical traits of each leaf side and estimated gs (based on these traits) were determined for 54 introgression lines (ILs) generated by introgressing segments of Solanum pennelli into the S. lycopersicum 'M82'. A quantitative trait locus (QTL) analysis for stomatal traits was also performed.

Key results

A wide genetic variation in stomat

SUBMITTER: Fanourakis D 

PROVIDER: S-EPMC4343285 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature