Soil Mineral Composition and Salinity Are the Main Factors Regulating the Bacterial Community Associated with the Roots of Coastal Sand Dune Halophytes.

Soil salinity and mineral deficiency are major problems in agriculture. Many studies have reported that plant-associated microbiota, particularly rhizosphere and root microbiota, play a crucial role in tolerance against salinity and mineral deficiency. Nevertheless, there are still many unknown parts of plant-microbe interaction, especially regarding their role in halophyte adaptation to coastal ecosystems.

Seed Morphometry of Native Indonesian Orchids in the Genus .

In this study, seeds of 10 species of epiphytic orchids were examined using light and scanning electron microscope. Quantitative and qualitative characters were analyzed. All the presently investigated seeds showed are transparent with visible embryo and remarkable embryo color variations (such as pale yellow, light yellow, shiny yellow to yellow, orange, and white).

Seed Germination and Seedling Development of a Rare Indonesian Native Orchid J.J.Sm.

, an epiphytic orchid, has a great potential for commercial exploitation in the cut-flower industry. It is difficult to propagate vegetatively as it naturally grows slowly. Therefore, there is a need to improve the propagation methods to avoid endangering its natural populations.

-mediated transformation of J.J.Sm: An important medicinal orchid.

A protocol for genetic transformation mediated by and production of transgenic has been developed for the first time. The 8-week-old protocorm explants were used as target of transformation with strain LBA4404 carrying plasmid pG35SKNAT1. Several parameters such as infection period, density, concentration of acetosyringone, and co-cultivation period were evaluated for the transformation efficiency.

Data of root anatomical responses to periodic waterlogging stress of tobacco () varieties.

The data of root anatomical structure and the formation of aerenchyma tissues of five varieties of tobacco under waterlogging stress were obtained by modified paraffin method. Each tobacco varieties performed distinct anatomical adaptation response, including changes of cortical tissue, stele diameter, xylem diameter and the formation of aerenchyma under periodic waterlogging stress.