Zhenbing Qiao^1,2, Mengyun Chen^1,2, Wenjun Ma^1,2, Juan Zhao^1,2, Jiaju Zhu^1,2, Kaikai Zhu^1,2, Pengpeng Tan^1,2, Fangren Peng^1,2,*

Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2349-2365, 2024, DOI:10.32604/phyton.2024.056655 - 30 September 2024

Abstract Ammonium nitrogen (NH₄⁺-N) is one of the main forms of nitrogen absorbed and utilized by plants, and mastering the regulatory mechanism of plant ammonium assimilation is a key way to improve the efficiency of plant nitrogen utilization. Glutamine synthetase (GS) and glutamate synthase (GOGAT), two key enzymes for ammonium assimilation, have rarely been studied in pecan. In this study, GS and GOGAT family members of pecan were identified and analyzed using bioinformatics methods. The results indicated that 6 GS and 4 GOGAT genes were identified. The cis-acting elements can be broadly categorized into light-responsive, hormone-responsive, and stress-responsive elements.… More >

María Janeth Rodríguez-Roque¹, Carmen Lizette Del-Toro-Sánchez^2,*, Janet Madeline Chávez-Ayala¹, Ricardo Iván González-Vega², Liliana Maribel Pérez-Pérez², Esteban Sánchez-Chávez³, Nora Aideé Salas-Salazar¹, Juan Manuel Soto-Parra¹, Rey David Iturralde-García², María Antonia Flores-Córdova^1,*

Journal of Renewable Materials, Vol.10, No.10, pp. 2569-2580, 2022, DOI:10.32604/jrm.2022.021163 - 08 June 2022

Abstract Phenolic compounds are related to high biological activity, avoiding oxidation in food and human systems. Nutshells are by-products derived from the pecan nut processing that contain important amounts of phenols which biological activity must be studied. This research aimed to evaluate the antioxidant (DPPH, ABTS, FRAP and hemolysis) and anti-inflammatory activities of shell extracts from pecan nuts harvested during the crop production cycle 2018 and 2019, as well as the in vitro digestibility of their phenolic compounds, including flavonoids. Results showed that extracts from the crop production cycle 2018 obtained the highest yield, while those from… More > Graphic Abstract

Dalila Jacqueline Escudero-Almanza¹, Oscar Cruz-Alvarez¹, Ofelia Adriana Hernández-Rodríguez¹, Juan Luis Jacobo-Cuellar¹, Esteban Sánchez-Chávez², Pablo Preciado-Rángel³, Dámaris Leopoldina Ojeda-Barrios^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.6, pp. 1141-1152, 2022, DOI:10.32604/phyton.2022.019129 - 14 February 2022

Abstract Pecan [Carya illinoinensis (Wangenh.) K. Koch.] is a deciduous tree whose fruits (nuts) are of high economic value and offer excellent nutritional benefits. However, soils high in sulphates can limit its growth and development. Working with 5-year-old trees of ‘Western Schley’ pecan grown in soils high in sulphates, the levels of proline and oxidative metabolism were recorded in the leaflets. Results showed that different levels of visible leaflet damage (‘sufficiency’, ‘low’, ‘moderate’ or ‘severe’) were associated with different levels of leaflet sulphates (mg kg⁻¹): ‘sufficiency’ (≤40), ‘low’ (41–60), ‘moderate’ (61–80) and ‘severe’ (80–100). ‘Severe’ sulphate damage was… More >

Ávila-Rodríguez V¹, CA Vacio-Fraga¹, U Nava-Camberos², C Márquez-Hernández¹, C García de la Peña¹, V Olalde-Portugal³, JL García-Hernández²

Phyton-International Journal of Experimental Botany, Vol.85, pp. 249-255, 2016, DOI:10.32604/phyton.2016.85.249

Abstract Pecan Carya illinoinensis (Wang.) K. Koch is one of the most important crops in northern Mexico. In the Comarca Lagunera, during 2013, the pecan acre age was 7075 ha, a nut production of 8648 ton, and a value of US$ 29.9 million (US$ 4230/ha). The aphids Monellia caryella Fitch., Monelliopsis pecanis Bissell and Melanocallis caryaefoliae Davis (Hemiptera: Aphididae) are among the most important insect pests associated with the pecan. The objectives of this study were to identify the species of aphids, determine their population dynamics and parasitism, in pecan orchards with different insect pest management programs, in the Comarca… More >

Moreno-Izaguirre E¹, D Ojeda-Barrios², G Avila-Quezada², V Guerrero-Prieto³, R Parra-Quezada³, T Ruiz-Anchondo²

Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 80-85, 2015, DOI:10.32604/phyton.2015.84.080

Abstract Pecan [Carya illinoensis (Wanngenh) K. Koch] is one of the most important nut crops in arid and semiarid regions of Mexico. Here, most pecans are grown in saline soils having poor permeability which are further degraded by the use of low-quality irrigation water. Salinity adversely affects both pecan nut quality and yield. Little work has been done to explore the physiological effects of salinity on native pecan trees. Here we examine physiological changes determined by exposure of pecan seedlings to sodium sulfate (Na₂SO₄) at four concentrations: 1000, 2000, 3000 and 4000 mg/L applied twice weekly over a… More >