Research Article
The Effects of Chilling on Antioxidant Enzyme System and Related Gene Expression Levels in Sweet Corn Seeds with Different Germination Characteristics
Tingzhen Wang
,
Zhenxing Wu,
Jianjian Chen,
Fangjian Li,
Guihua Lv*
Issue:
Volume 13, Issue 6, December 2024
Pages:
224-234
Received:
8 October 2024
Accepted:
11 November 2024
Published:
21 November 2024
DOI:
10.11648/j.aff.20241306.11
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Abstract: Sweet corn is a vegetable and grain dual-use crop with high economic value and industrial advantages. Low temperature stress significantly reduces the germination rate of sweet corn seeds, which has a negative impact on both quality and yield. This study used the chilling sensitive sweet corn inbred line 20hi111 and the chilling tolerant sweet corn inbred line T135 as experimental materials to measure the MDA (malondialdehyde) and H2O2 content, CAT, POD, and SOD enzyme activities, and enzyme gene expression patterns during seed germination under low temperature (10°C) and normal temperature (25°C) treatments. The research results indicated that during low-temperature germination, the H2O2 content and CAT activity of 20hi111 were generally higher than those of T135, while the POD and SOD activities and MDA content were generally lower than those of T135. There was no strict consistency between gene expression and enzyme activity. At low temperature, the expression of ZmCAT1 and ZmCAT3 in 20hi111 was significantly higher than T135, while there was no significant difference in ZmPOD1. In 20hi111, ZmPOD3 was first lower and then higher than T135, and ZmSOD3 and ZmSOD9 were lower than T135 under low temperature treatment. In this study, the activity of antioxidant enzymes and the expression of antioxidant enzyme-related genes in sweet corn inbred lines with different germination characteristics under low temperature were analyzed, which provided some theoretical basis for cultivating sweet corn varieties with low temperature tolerance.
Abstract: Sweet corn is a vegetable and grain dual-use crop with high economic value and industrial advantages. Low temperature stress significantly reduces the germination rate of sweet corn seeds, which has a negative impact on both quality and yield. This study used the chilling sensitive sweet corn inbred line 20hi111 and the chilling tolerant sweet corn...
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Review Article
Review of the Beekeeping Vigilance Methods and Perspectives
Issue:
Volume 13, Issue 6, December 2024
Pages:
235-239
Received:
27 September 2024
Accepted:
21 October 2024
Published:
26 November 2024
DOI:
10.11648/j.aff.20241306.12
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Views:
Abstract: A collapse of bee colonies, for the first time in Morocco, of unknown origin, was announced on January 21, 2022 by the National Office for Food Safety (ONSSA). Causes were mentioned such as the unprecedented drought affecting the country and climate change as well as the use of pesticides and the appearance of new hive parasites and viruses. Colony collapse disorder (CCD) has been reported in several parts of the world, including Europe, Canada and Asia. Due to the agro-economic and ecological interest of the bee in the pollination of fruit trees and various seasonal and annual crops, the condition is considered alarming. Hence the need for an integrated control program that uses various monitoring measures and a set of mechanical, physical, biological and chemical control methods against hive pests. A census of the observation and countermeasures of Morocco and at the level of the world in the face of this problem was carried out. Viral diseases (Dicistroviridae in the United States) or parasites (in Spain, the fungus Nosema cerenae, varroa destructor in Canada, Varroa, itself vector of the virus), livestock management problems (transhumance and inbreeding) and the use of pesticides (the Gaucho, banned on sunflower since 1999 in France) remain the most studied causes. Surveillance and vigilance networks for beekeepers whose objective is to continuously inform the beekeeping sector of the general state of health of bees (mortality, theft of hives, invasions by other insects and parasites, etc.) everywhere in the world are essential. The ApiVigi® network is an example.
Abstract: A collapse of bee colonies, for the first time in Morocco, of unknown origin, was announced on January 21, 2022 by the National Office for Food Safety (ONSSA). Causes were mentioned such as the unprecedented drought affecting the country and climate change as well as the use of pesticides and the appearance of new hive parasites and viruses. Colony...
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