Yasmin Vázquez-Santos¹, Yuriana Martínez-Orea¹, Javier Álvarez-Sánchez¹, Noé Manuel Montaño², Sara Lucía Camargo-Ricalde², Silvia Castillo-Argüero^1,*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 605-619, 2021, DOI:10.32604/phyton.2021.014208

Abstract The aim of this study was to analyze the performance of Acaena elongata colonized by arbuscular mycorrhizal fungi (AMF) to different phosphorus (P) concentrations, as a measure of AMF dependency. A. elongata, is a species from soils where P availability is limited, such as temperate forests. Our research questions were: 1) How do different P concentrations affect the AMF association in Acaena elongata, and 2) How does the AMF association influence A. elongata’s growth under different P concentrations? A. elongata’s growth, P content in plant tissue, AMF colonization and dependency were measured under four P concentrations: control (0 g P… More >

Dabing Xiang¹, Wei Wei¹, Yan Wan¹, Xiaoyong Wu¹, Xueling Ye¹, Lianxin Peng¹, Linyun Zhong², Qi Wu¹, Liang Zou¹, Gang Zhao^1,*, Jianglin Zhao^1,*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 461-473, 2021, DOI:10.32604/phyton.2021.011724

Abstract Drought can limit the growth and reduce the yield of crops, but the safe and effective bio-approach to improve the drought resistance of crops is very little. We conducted an experiment in which we monitored the effects of polysaccharide from the endophyte Bionectria sp. Fat6 on the growth of Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn) seedlings under control and drought-stressed conditions by determining gas exchange, photosynthesis parameters, photosynthetic pigment contents, and metabolite accumulation. Results indicated that the polysaccharide from endophyte stimulated plant growth and increased the aboveground biomass, root mass, and root/shoot ratio of Tartary buckwheat. Application of the polysaccharide… More >

Taoze Sun, Wei Tan, Yujie Yang, Hongna Mu^*

Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 171-178, 2021, DOI:10.32604/phyton.2020.013668

Abstract Pinus elliottii is an exotic afforestation pine extensively distributed in southern parts of China. In order to understand whether endophytic fungi can affect seedling growth of P. elliottii, Piriformospora indica (Pi), Funnelifcrmis mosseae (Fm), and Diversispora tortuosa (Dt) were inoculated respectively, and the non-inoculated group was set as control. The growth indexes, the contents of soluble sugar and soluble protein, and plant endogenous hormone levels in the leaves of P. elliottii, were analyzed. The results showed that Fm, Dt and Pi colonized the P. elliottii roots to form mycorrhizal structure and chlamydospores arranged in beads respectively. Three fungal inoculants exhibited… More >

Tengyue Zou, Bing Wu, Wen Wu, Long Ge, Yong Xu^*

Phyton-International Journal of Experimental Botany, Vol.89, No.2, pp. 275-289, 2020, DOI:10.32604/phyton.2020.09277

Abstract Light is the major source of energy for plants and as such has a profound effect on plant growth and development. Red and blue lights have been considered to best drive photosynthetic metabolism and are beneficial for plant growth and development, and green light was seen as a signal to slow down or stop. In this study, Arabidopsis thaliana (Arabidopsis) was used to investigate the effects of red, blue and green lights on the growth and development of plants from seed germination to seeding. Results demonstrated that red light showed a promotion effect but blue light a prohibition one in… More >

MARIA TERESA MARTIN^2*, HILDA PEDRANZANI³, PATRICIA GARCÍA-MOLINERO², VALENTIN PANDO⁴, ROSARIO SIERRA-DE-GRADO¹

BIOCELL, Vol.33, No.3, pp. 141-148, 2009, DOI:10.32604/biocell.2009.33.141

Abstract Two independent parameters, epicotyl height (cm) and number of induced buds were studied on Pinus pinaster explants to analyse the effects of three phytohormones (6-benzylaminopurine, jasmonic acid, ethylene) which were combined or not in 11 different treatments. Epicotyle length diminished significantly in relation to the control medium (medium without exogen phytohormones) in presence of jasmonic acid, 6-benzylaminopurine or Ethephon (which is converted to ethylene in plants) in any of treatments. Concentrations of 100 μM of jasmonic acid and Ethephon had a greater inhibitory effect than the treatments with 10 μM. In addition to that, jasmonic acid was a stronger inhibitor… More >

Robles-Hernández L, J Hernández-Huerta, AC González-Franco, OA Hernández-Rodríguez, A Núñez-Barrios, R Pérez-Leal

Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 253-261, 2015, DOI:10.32604/phyton.2015.84.253

Abstract Chili pepper is one of the main crops of economic importance in Mexico, and Fusarium wilting is a disease that limits its production. In addition, the inappropriate use of agrochemicals in farming activities generate environmental and health problems. Therefore, in this study the effectiveness of Streptomyces sp PRIO41 was evaluated as a (1) biocontrol agent of Fusarium spp and (2) plant growth promoter bacteria. Assays of pathogenicity and virulence of Fusarium spp. in jalapeño pepper seeds, and interactions of these pathogens with Streptomyces PRIO41 were evaluated under two nutritional conditions. In the greenhouse, the effectiveness of Streptomyces sp. PRIO41 was… More >

Hernández-Castillo FD¹, RH Lira-Saldivar², G Gallegos-Morales¹, M Hernández-Suárez¹, S Solis-Gaona²

Phyton-International Journal of Experimental Botany, Vol.83, pp. 49-55, 2014, DOI:10.32604/phyton.2014.83.049

Abstract One of the most severe phytosanitary problems that face chili pepper producers in Mexico, and in many other parts of the world, is the disease known as "secadera" or wilting, caused by diverse pathogens. These patogens are mainly controlled with synthetic pesticides, thus causing a severe ecological impact, toxicity to humans, generation of plant resistance to fungicides, and increments of production costs. Because of this, it rises the need of finding more environmentally friendly options. We evaluated rhizospheric bacteria as a possible biological control of pepper wilt. We used three bacterial strains belonging to the Bacillus genera. These strains were… More >

Argüello JA, L Seisdedos, MC Díaz Goldfarb, EA Fabio, SB Núñez, A Ledesma

Phyton-International Journal of Experimental Botany, Vol.82, pp. 289-295, 2013, DOI:10.32604/phyton.2013.82.289

Abstract The objective of this work was to analyze the impact of a vermicompost treatment on anatomical and physiological modifications related to assimilate partitioning and growth in lettuce seedlings. The results showed that vermicompost increased growth, which was most likely due to an increased activity of the ground meristem of the leaf blade. A greater height and number of chlorenchyma layers were observed in the leaf blade. This was related to an increase in the photosynthetic activity, expressed by an increase in the net assimilation rate. Vermicompost also showed an effect at the procambium level, producing an increase in the number… More >

Buentello Volante¹ B, F Díaz de León-Sánchez¹, F Rivera-Cabrera¹, R Aguilar Caballero², M Ponce-Valadez¹, E Sánchez de Jiménez², LJ Pérez-F lores¹

Phyton-International Journal of Experimental Botany, Vol.79, pp. 101-108, 2010, DOI:10.32604/phyton.2010.79.101

Abstract Auxin and insulin promote Zea mays embryo growth, induce S6 ribosomal protein (S6rp) phosphorylation, and promote specific protein synthesis. The objective of this research was to test a possible cross-talk between insulin and auxin transduction pathways in Z. mays coleoptiles, typical auxin target tissues. Auxin and insulin produced differential quantitative and qualitative stimulation of cytoplasmic and ribosomal protein phosphorylation, and specific patterns of de novo synthesized cytoplasmic proteins. In addition, insulin induced S6rp phosphorylation was strongly inhibited by rapamycin, indicating target of rapamycin (TOR) kinase participation; auxin-induced S6rp phosphorylation was insensitive to this inhibitor. Phosphatidic acid (PA), a second messenger… More >

Castillo-Aguilar C de la C¹, JJ Zúñiga-Aguilar², AA Guzmán-Antonio², R Garruña³

Phyton-International Journal of Experimental Botany, Vol.86, pp. 199-204, 2017, DOI:10.32604/phyton.2017.86.199

Abstract The Habanero pepper (Capsicum chinense) is intensively cultivated in the Yucatan peninsula, México. Because of adverse environmental conditions, it required seeding in germination trays, from which six-week-old seedlings were transplanted to the soil. Adequate nursing and fertilization programmes were made to improve health and vigour before seedlings transplanting. During seed germination, we investigated the effects of inoculation with four plant growth-promoting rhizobacteria (PGPR) on growth, nutrient uptake and gas exchange of 8-week-old Capsicum chinense plants. Inoculation was made with Pseudomonas sp. -P61-, Pseudomonas sp. -A46-, Bacillus pumillus -R44-, and Paenibacillus polymyxa-BSP1.1-. The BSP1.1 strain produced the highest increase in plant… More >