Response of an endangered tree species from Caatinga to mycorrhization and phosphorus fertilization

Abstract

Schinopsis brasiliensis is an endangered tree species found in the Caatinga biome. It presents a characteristic slow development and difficult propagation, although it has been traditionally exploited in the region. Application of arbuscular mycorrhizal fungi (AMF) and phosphorus (P) fertilization may be beneficial to S. brasiliensis development at the seedling stage, which at the same time may help species conservation and the recovery of degraded areas in the Caatinga biome. We assessed the response of S. brasiliensis to AMF inoculation (Claroideoglomus etunicatum and Acaulospora longula) and P fertilization (0, 12, 24, and 48 mg dm −3 addition of P 2 O 5 ). S. brasiliensis responded positively to both AMF inoculation and P fertilization. At low P concentrations, the inoculated plants showed higher leaf area and enhanced vegetative development, nutrient content and biomass production compared with non-inoculated plants. Conversely, increasing levels of P fertilization decreased the level of mycorrhizal colonization, plant responsiveness to inoculation, and spore production in C. etunicatum. Thus, P concentrations were able to influence the response of S. brasiliensis to mycorrhization and responsiveness to increased mycorrhization with the decrease in P availability. These results showed that mycorrhizal symbiosis plays an essential role in the development of S. brasiliensis.

Arbuscular mycorrhizal fungi and phosphorus in the initial development of Mimosa tenuiflora (Willd.) Poir

“…With regard to Fe concentration, the decrease in its uptake in plants inoculated with increasing doses of P agrees with the latest data of Oliveira et al (2015), who evaluated the response of Schinopsis brasiliensis Engl. to inoculation with AMF and P fertilization.…”

“…The decrease in growth response at increasing doses of SSP confirms the benefits of mycorrhizal inoculation in soils with low P values. C. etunicatum provides higher growth rates, even in very fertile soils, unlike what Oliveira et al (2015) found, in which C.…”

Influence of mycorrhization and phosphate fertilizer on growth of Voandzou (<i>Vigna subterranea</i> (L.) Verdc.)

“…This result is in line with those of Mbogne et al (2015) on pumpkins and Temegne et al (2017b) on Bambara groundnuts. De Oliveira et al (2015) also showed that AMF increases plant development at low P levels.…”

Effect of mycorrhization and soluble phosphate on growth and phosphorus supply of Voandzou [Vigna subterranea (L.) Verdc.]

“…Mbogne et al (2015) and Temegne et al (2017) found that chemical fertilizer did not affect the frequency of mycorhization. In addition, Oliveira et al (2015), showed that mycorrhization increases the plants development at low P levels. Ingleby et al (2001Ingleby et al ( , 2007 have shown that high supply of soluble P i decrease mycorrhizal infection rate and may eliminate the positive effects of this association on plant yield.…”