Botryosphaeriaceae 在南非北部农业生态系统和保护区的 Anacardiaceae 无症状和有症状组织上部分重叠。

Fungal systematics and evolution Pub Date : 2024-06-01 Epub Date: 2024-06-07 DOI:10.3114/fuse.2024.13.07
B Slippers, E Ramabulana, M P A Coetzee
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引用次数: 0

摘要

Botryosphaeriaceae 的成员是众所周知的内生菌和与压力相关的病原体。最近,我们研究了木犀科(Anacardiaceae)三个树种(Sclerocarya birrea、Mangifera indica 和 Lannea schweinfurthii)健康组织中 Botryosphaeriaceae 的多样性。在这里,我们要问的是,这种多样性与这些树种上与枯萎病相关的 Botryosphaeriaceae 多样性相比如何。样本采集自农业生态系统(林波波省的奇昆达马莱马和奇希皮塞)和保护区(林波波省的恩瓦内迪和马蓬古布韦国家公园以及姆普马兰加省的克鲁格国家公园)生态系统。利用多基因序列数据和形态学数据对物种进行了特征描述。Diplodia allocellula、Dothiorella brevicollis、Do. viticola、Lasiodiplodia crassispora、L. mahajangana 和 Neofusicoccum parvum 均出现在无症状和有症状的样本中。Dothiorella dulcispinea、L. gonubiensis 和 L. exigua 以及一个以前未知的物种,即 Oblongocollomyces ednahkunjekuae sp.O. ednahkunjekuae 生物学上一个有趣的方面是,它似乎适应较高的温度,在 30 °C 时生长最佳,在 35 °C 时比在 25 °C 时生长更快。Lasiodiplodia pseudotheobromae 只出现在有症状的枝条上。Neofusicoccum parvum 在保护区明显缺乏,而在农业生态系统中,它在籼稻上最为常见。只有 L. crassispora 和 L. mahajangana 在所有三种树种上都有重叠,是与枯萎病相关的主要物种。这些结果表明,并非所有在一个地区出现症状的 Botryosphaeriaceae 对相关寄主群的疾病发展都有同样的贡献,环境干扰在 N. parvum 的分布中起着重要作用。引用:Slippers B, Ramabulana E, Coetzee MPA (2024).Botryosphaeriaceae 部分重叠于南非北部农业生态系统和保护区中 Anacardiaceae 的无症状和有症状组织上。Fungal Systematics and Evolution 13: 131-142. doi: 10.3114/fuse.2024.13.07.
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Botryosphaeriaceae partially overlap on asymptomatic and symptomatic tissues of Anacardiaceae in agroecosystems and conservation areas in northern South Africa.

Members of the Botryosphaeriaceae are well-known endophytes and stress-related pathogens. We recently characterised the diversity of Botryosphaeriaceae in healthy tissues of three tree species in the Anacardiaceae, namely Sclerocarya birrea, Mangifera indica and Lannea schweinfurthii. Here we ask how that diversity compares with the Botryosphaeriaceae diversity associated with dieback on those tree species. Samples were collected from agroecosystems (Tshikundamalema and Tshipise in Limpopo) and conservation areas (Nwanedi and the Mapungubwe National Park in Limpopo and the Kruger National Park in Mpumalanga) ecosystems. Species were characterised using multigene sequence data and morphological data. Diplodia allocellula, Dothiorella brevicollis, Do. viticola, Lasiodiplodia crassispora, L. mahajangana and Neofusicoccum parvum occurred on both asymptomatic and symptomatic samples. Dothiorella dulcispinea, L. gonubiensis and L. exigua, as well as a previously unknown species described here as Oblongocollomyces ednahkunjekuae sp. nov, only occurred in asymptomatic branches. An interesting aspect of the biology of O. ednahkunjekuaeae is that it appears to be adapted to higher temperatures, with an optimum growth at 30 °C, and faster growth at 35 °C than at 25 °C. Lasiodiplodia pseudotheobromae only occurred in symptomatic branches. Neofusicoccum parvum was notably absent from conservation areas, and in agroecosystem it was most common on M. indica. Only L. crassispora and L. mahajangana overlapped on all three tree species and were the dominant species associated with dieback. These results show that not all Botryosphaeriaceae occurring asymptomatically in an area contribute equally to disease development on a related group of hosts, and that environmental disturbance plays a significant role in the distribution of N. parvum. Citation: Slippers B, Ramabulana E, Coetzee MPA (2024). Botryosphaeriaceae partially overlap on asymptomatic and symptomatic tissues of Anacardiaceae in agroecosystems and conservation areas in northern South Africa. Fungal Systematics and Evolution 13: 131-142. doi: 10.3114/fuse.2024.13.07.

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