News Update on Botany Research: April – 2019

Compost bacteria provide antifungal activity against grey mold and Alternaria rot on bell pepper fruit

Bell pepper (Capsicum annuum L.) fruit are prone to numerous molds, together with gray mould and Alternaria rot. during this work, antagonistic microorganism isolated from disease-suppressive composts were assessed for his or her ability to cut back the mycelial growth of Botrytis cinerea Persoon and Alternaria alternata (Fries) Keissler further on suppress gray mould and Alternaria rot on bell pepper. Results showed that completely different microorganism antagonists reduced mycelial growth of B. cinerea and A. alternata by up to forty nine and fifty three, severally. The microorganism provided inhibition of gray mould, reducing incidence and severity by the maximum amount as forty three and sixty seven, severally. The isolates additionally provided robust repressive effects against Alternaria rot, decreasing incidence and severity by the maximum amount as seventy seven and eightieth, severally. genus Pseudomonas and Arthrobacter spp. were notably restrictive to Alternaria rot. Results of this study counsel antagonistic microorganism might represent a possible technique for dominant fruit rot of bell pepper. [1]

Seed banks of subtropical grassland patches within an urban matrix in South Africa: reflecting the past and foretelling the future

Urban grasslands usually exist as fragmented patches with varied threat levels. These patches are usually not suitably managed because of restricted information on their responses to disturbance and seed bank regenerative potential. This study compared seed banks between non-naturally disturbed ANd undisturbed patches of South African subtropic grasslands in an urban surroundings. Standing vegetation was characterized via year-around quadrat and monthly transect sampling. The seed banks were sampled when the 2 main diffusion periods and assessed for species composition and density. The seed bank species (24) portrayed a set (9%) of the standing vegetation, with forbs being the foremost speciose organic structure and grasses the most abounding. Disturbance had a moderate impact on seed bank density however considerably affected species composition and ordering. clump and ordination analyses separated seed banks supported disturbance history. However, seed banks in disturbed patches maintained the overall character of the piece of land sort. Diagnostic, rare and vulnerable taxa were absent from seed banks, no matter disturbance history. Consequently, restoration can presumably need seed enrichment and species introduction instead of exploitation of natural seed banks. distinguishing disturbance-sensitive species through seed bank surveys will inform piece of land conservation and restoration methods. [2]

Inhibitory effect of rosemary essential oil, loaded in liposomes, on seed germination of Acacia saligna, an invasive species in Mediterranean ecosystems

Acacia saligna (Labill.) Wendl. is native of southwestern Australia, however has been planted extensively in several areas of the globe, as well as the Mediterranean region, changing into extremely invasive particularly in coastal habitats. The aim of this study was to check whether or not the autochthonic Rosmarinus officinalis L. oil (EO), loaded in liposomes, will inhibit the seed germination of the invasive alien tree saligna. Variability in seed germination needs and responses among populations were evaluated. Germination tests below light-weight, at constant temperatures and 3 concentrations of rosemary EO were dispensed. Among the examined factors, solely the EO quantity and temperature had a extremely important result on seed germination. the bottom EO amount didn’t show variations compared with the management,

while the very best quantity suppressed considerably seed germination of all populations the least bit the tested temperatures. No seed recovered the power to germinate when the EO treatment with either of the 2 laundry strategies. Our results allowed US to spot the minimum quantity of rosemary EO capable of inhibiting the seed germination of the invasive tree saligna. These results may be helpful for the management of this invasive alien species, so permitting the conservation of autochthonic Mediterranean plant species and habitats. [3]

Assessment of trace elements pollution in the sea ports of New South Wales (NSW), Australia using oysters as bioindicators

In this study state capital rock oysters (S. glomerata) from six major ocean ports of office, Australia were used as bioindicators to assess the distribution and levels of element accumulation within the ports. Substantial enrichment of Cu, metallic element and metallic element within the oysters of the ocean ports were detected compared to their background samples and also the America Environmental Protection Agency (USEPA) provisionary tolerable intake commonplace. Enrichment of As, Al, Fe, Mn, Br, Sr were conjointly found within the oysters at the port areas. The bioconcentration ratios of the trace parts illustrated important Fe, Cu, Zn, As, Mn, Al, metallic element and atomic number 24 accumulation in S. glomerate. The aggregation sediment accumulation issue instructed Cu, Mn and metallic element accumulation at 2 of the ports (Port Yamba and Botany), indicating accessibility of those metals within the oysters as robust metal accumulators. additionally, integrated metal contamination illustrated notable Fe, Zn, Cu and Al contamination at port atmosphere, whereas cluster analysis represented interconnection between the contaminants and also the study sites. [4]

Responses of Morphological and Yield Components of Pepper in Treatments of Glomus deserticola Trappe, Bloss & J. A. Menge, Pleurotus pulmonarius (Fr.) Quél. compost and Poultry Manure

Responses of Morphological and Yield parts of Pepper in Treatments of Glomus deserticola Trappe, Bloss & J. A. Menge, genus Pleurotus pulmonarius (Fr.) Quél. compost and Poultry Manure

The response of 5 types of pepper was investigated at the analysis farm of the Department of phytology, University of city. 5 treatments of Glomus deserticola (AMF), poultry manure (PM), genus Pleurotus pulmonarius (SMC) were inoculated into five weight unit of sterile soil in poly pots, whereas uninoculated served as management. The treatment and varieties created extremely vital (p [5]

Reference

[1] Luo, M., Purdy, H. and Avis, T.J., 2019. Compost bacteria provide antifungal activity against grey mold and Alternaria rot on bell pepper fruit. Botany, 97(3), pp.221-230. (Web Link)

[2] Sershen, Drury, C.C., Carbutt, C. and Ramdhani, S., 2019. Seed banks of subtropical grassland patches within an urban matrix in South Africa: reflecting the past and foretelling the future. Botany, (999), pp.1-14. (Web Link)

[3] Maccioni, A., Santo, A., Falconieri, D., Piras, A., Manconi, M., Maxia, A. and Bacchetta, G., Inhibitory effect of rosemary essential oil, loaded in liposomes, on seed germination of Acacia saligna (Labill.) Wendl., an invasive species in Mediterranean ecosystems. Botany, (ja). (Web Link)

[4] Assessment of trace elements pollution in the sea ports of New South Wales (NSW), Australia using oysters as bioindicators
Sayka Jahan & Vladimir Strezov
Scientific Reportsvolume 9, Article number: 1416 (2019) (Web Link)

[5] J. Olawuyi, O., G. Jonathan, S., Babalola, B. J., A. Aina, D., M. Olowe, O. and S. Ogunsanya, O. (2017) “Responses of Morphological and Yield Components of Pepper in Treatments of Glomus deserticola Trappe, Bloss & J. A. Menge, Pleurotus pulmonarius (Fr.) Quél. compost and Poultry Manure”, Journal of Advances in Biology & Biotechnology, 14(3), pp. 1-8. doi: 10.9734/JABB/2017/33593. (Web Link)

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