Unexpected abscission of flowers or fruits is a major limiting factor for crop productivity. Key genes controlling abscission in plants, especially in popular fruit trees, are largely unknown. Here we identified a litchi (Litchi chinensis Sonn.) IDA-like (INFLORESCENCE DEFICIENT IN ABSCISSION-like) gene LcIDL1 as a potential key regulator of abscission. LcIDL1 encodes a peptide that shows the c...

An investigation of the effect of ethylene on the fine structure of abscission cells has been prompted by the increasing amount of physiological and biochemical data on ethylene-induced abscission (cf. 1-3, 6, 7, 10-13, 18, 22). Recent investigations (14, 15, 19) have shown that certain changes occur in the fine structure of the cytoplasm and the cell wall as cell separation develops during nat...

An experiment was carried out in the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, to investigate the flowering pattern, floral and pod abscission under untreated and GABA (mixture of GA3 and Abscissic acid) treated soybean and their trends concern to yield. The variety of soybean PB-1 (Shohag) was used in the investigation. GABA at 0.5, 1.0 ...

The tomato (Lycopersicon esculentum cv Ailsa Craig) polygalacturonase genes TAPG1 (LYCes;Pga1;2) and TAPG4 (LYCes;Pga1;5) are abundantly expressed in both abscission zones and the pistils of mature flowers. To further investigate the spatial and temporal expression patterns for these genes, the TAPG gene promoters were ligated to beta-glucuronidase (GUS) reporter genes and transformed into toma...

Tomato flower abscises at the anatomically distinct abscission zone that separates the pedicel into basal and apical portions. During abscission, cell separation occurs only at the abscission zone indicating distinctive molecular regulation in its cells. We conducted a transcriptome analysis of tomato pedicel tissues during ethylene promoted abscission. We found that the abscission zone was the...

Senescence of floral organs is broadly divided into two groups: those that exhibit sensitivity to exogenous ethylene and those that do not. Endogenous ethylene production from the former group is via a well-characterized biochemical pathway and is either due to developmental or pollination-induced senescence. Many flowers from the order Liliales are characterized as ethylene-insensitive since t...

Background: Flower bud/s, flower/s and fruit/pod/s abscission is one of the momentous bottlenecks in pulses general pigeonpea particular, resulting poor reproductive efficiency. Abscission occurs both before after fertilization. Knowledge on nature extent genetic variation available genotypes help breeders for planning breeding programmes to identify that retain maximum flowers hence increase p...

A ligand-receptor module comprised of the peptide INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) and the receptor-like kinases HAESA (HAE) and HAESA-LIKE2 (HSL2) activates organ abscission in Arabidopsis flowers. Another set of receptor-like kinases, including EVERSHED (EVR), restricts the extent of cell separation in abscission zones by potentially altering HAE/HSL2 localization or activity. The ...

ABSTRACT- Heat stress causes flower and fruit abscission in pepper. This study was conducted in the greenhouses of Isfahan University of Technology to evaluate the effect of foliar application of Benzyl adenine (BA) and potassium silicate (K2SiO3) under heat stress condition on bell pepper. Two factorial experiments based on completely randomized design with four concentrations of BA (0, 0.06, ...

Petal wilting and/or abscission terminates the life of the flower. However, how wilting and abscission are coordinated is not fully understood. There is wide variation in the extent to which petals wilt before abscission, even between cultivars of the same species. For example, tepals of Lilium longiflorum wilt substantially, while those of the closely related Lilium longiflorum×Asiatic hybrid ...