Neocamarosporium betae causing leaf spot and stem necrosis disease on Chenopodium quinoa in Shanxi Province, China

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2024-08-10 DOI:10.1016/j.cropro.2024.106889

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引用次数: 0

Abstract

Quinoa (Chenopodium quinoa) is a pseudocereal crop, and has been widely cultivated in China with excellent sources of nutrients, amino acids, and vitamins. During the inflorescence emergence stage to the grain-filling stage, Neocamarosporium betae leaf spot and stem necrosis of quinoa (NLSQ) as a new emerging disease was observed in Shanxi Province of China. NLSQ usually infected the leaves and then gradually spread towards to the stems. Typical symptoms included tan to brown lesions and with many black pycnidia, leading to lodging, leaf abscission, and grain unfilling. Based on morphological characteristics, phylogenetic analyses, and pathogenicity tests, the pathogen was identified as N. betae. The morphological characterizations of N. betae from quinoa were pycnidial conidiomata, hyaline conidiogenous cell, and smooth hyaline aseptate conidia. At 2–6 days postinoculation, the typical symptoms induced by inoculations of N. betae on leaves and stems of quinoa. To our knowledge, this study firstly reported that N. betae was the pathogen of NLSQ in China. The findings of this current study will contribute to developing the disease diagnosis and management.

查看原文本刊更多论文

引起中国山西省藜麦叶斑病和茎坏死病的 betae 新赤霉病菌

藜麦（Chenopodium quinoa）是一种假谷类作物，在中国被广泛种植，是营养、氨基酸和维生素的极佳来源。在藜麦的花序萌发期至籽粒饱满期，中国山西省发现了一种新出现的病害--藜麦新孢子囊叶斑病和茎坏死病（NLSQ）。NLSQ 通常先感染叶片，然后逐渐向茎蔓延。典型症状包括棕褐色至褐色的病斑和许多黑色的分生孢子器，导致茎秆萎缩、叶片脱落和谷粒不饱满。根据形态特征、系统发育分析和致病性测试，确定病原体为 N. betae。藜麦中的 N. betae 的形态特征为分生孢子器、透明的分生孢子原胞和光滑的透明无菌分生孢子。接种后 2-6 天，N. betae 在藜麦的叶片和茎上出现典型症状。据我们所知，本研究首次报道了 N. betae 是中国藜麦的病原体。本研究的结果将有助于疾病的诊断和管理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.