TheAfGene Regulates Timing and Direction of Major Developmental Events during Leaf Morphogenesis in Garden Pea (Pisum sativum)

Unifoliata‐Afila interactions in pea leaf morphogenesis

“…The af UNI/UNI , af uni‐1 , af uni‐2 , and af tl uni‐2 plants were grown to observe the phenotype of leaves throughout shoot ontogeny. Leaf variation as a function of nodal position of the af UNI/UNI line was very similar to that of the af line described previously (Lu et al, 1996; Villani and DeMason, 1999a). Under long days, these plants produced, on average, 23 total leaves, and flowered at node 16.…”

“…7A–D). The sequence of lateral pinna initiation is bidirectional (2,3,1,4,5,6) for some leaves on the af genotypes (Villani and DeMason, 1997, 1999a), which differs slightly from the strictly acropetal pattern on the other pea genotypes. Even before the first pair of pinna primordia (which is position 2) emerged from the P2 leaf axis (Fig.…”

“…The classic mutant allele contains a 3‐bp insertion in the conserved leucine zipper domain and is predicted to be a loss of function mutant (Hofer et al, 2009). Leaves on the classic af mutant of pea (Goldenberg, 1965) possess only tendrils, but of two types: compound and simple (Lu et al, 1996; Villani and DeMason, 1999a). Adult leaves typically possess 2–3 pairs of compound tendrils in the proximal pinna positions and three pairs of simple tendrils in the distal pinna positions as well as a terminal, simple tendril (Fig.…”

Phenotypic characterization of the CRISPA (ARP gene) mutant of pea (Pisum sativum; Fabaceae): A reevaluation

“…Reference leaves had compound tendrils in the proximal blade region and simple tendrils in the distal like those of the af genotype, and the mean number of pinna pairs was 5.0 ( N = 16). This mean is close to the estimated mean number of pinna pairs on the af line, of 5.1 determined in a previous study (Villani and DeMason, 1999a). Ectopic stipules occurred beneath the proximal compound tendrils, but not beneath the distal simple tendrils.…”

Roles for auxin during morphogenesis of the compound leaves of pea ( Pisum sativum )

“…1b). The adult af leaf blade consists of two to three pairs of branched tendrils in the proximal region, two to three pairs of simple tendrils in the distal region and a simple, terminal tendril (Gould et al 1986;Marx 1987;Lu et al 1996;Villani and DeMason 1999a;Fig. 1c).…”