Screening of rhizobacteria from dipterocarp seedlings and saplings for the promotion of early growth of Shorea selanica seedlings

Abstract

A B S T R A C T L o w -c o s t f o r e s t m a nThe most prominent strain isolated from Shorea leprosula was Erwinia. Other effective isolates were tentatively identified as, Rhizobium , Enterobacter , Duganella , an Alcaligeneceae bacterium, an Oxalobacteraceae bacterium, and some yeasts.

Accelerated Degradation of Exogenous Indole byBurkholderiaunamaeStrain CK43B Exposed to Pyrogallol-Type Polyphenols

“…Generally, the woody peat soil in the forest bed prevents the growth of tree seedlings due to low mineral content, including inorganic N, and a high amount of polyphenols, which act as growth inhibitors. 10,11) Moreover, proteins from the leaf litter tannized by such polyphenols are in a state unavailable for decomposition by saprophytic microorganisms in the soil. Hence, the tropical woody peat soil ecosystem is typically under Nstarvation conditions.…”

Salkowski’s Reagent Test as a Primary Screening Index for Functionalities of Rhizobacteria Isolated from Wild Dipterocarp Saplings Growing Naturally on Medium-Strongly Acidic Tropical Peat Soil

“…Although many attempts at reforestation to rescue natural forest vegetation have been made, many trials, including transplanting of nursery plants of local trees, were not successful due to cost problem, the properties of the soil, and unprofitable land management. 1) Hence it is necessary to find a new approach to the rehabilitation of destroyed peatland. One practical trial using biological tools has been done by our group to search in the rhizosphere for functional microorganisms that assist the growth of tree seedlings and saplings.…”

Plant Growth and Microbiota Structural Effects of Rhizobacteria Inoculation on Mahogany (Swietenia macrophylla King [Meliaceae]) under Nursery Conditions

“…x engelmannii, which promoted increases of 25% in the dry matter weight of the roots and the number of shoots, as well as a 30% increase in the number of branches generated during the first year after the transplant to the field with respect to untreated plants [12]. In tropical forest species, rhizobacteria inoculation has been evaluated under uncontrolled nursery or field conditions in Schizolobium parahyba [13], Shorea selanica [14], Tectona grandis, Eucalyptus spp. [15], and Cedrela fissilis [16], another Meliaceae family member closely related to S. macrophylla.…”

“…[15], and Cedrela fissilis [16], another Meliaceae family member closely related to S. macrophylla. These works have demonstrated a positive impact on seedling performance [14,16,17], phytosanitary improvement [15], and wood yield [13], contributing to a growing acceptance by foresters as a component of their technological package for nursery and field establishment [18,19]. The mid-to-long-term establishment and benefits of inoculated rhizobacteria under commercial conditions are often assumed with certainty.…”