Salinity, pH and temperature growth ranges of <i>Halophytophthora</i> isolates suggest their physiological adaptations to mangrove environments

Su, Chun-Jui; Hsieh, Sung‐Yuan; Chiang, Michael; Pang, Ka−Lai

doi:10.1080/21501203.2020.1714768

Cited by 14 publications

(10 citation statements)

References 25 publications

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“…Marine representatives of the orders Peronosporales, Pythiales and Saprolegniales (Oomycota) have been widely studied for their growth at various salinities and sodium chloride concentrations (Tables 2 and 3). They are well adapted to the fluctuating salinities found in mangroves with the production of both asexual and sexual stages [50][51][52]. Few members of the Saprolegniaceae have been reported from marine habitats [56], and Harrison and Jones [57] questioned if this was due to their inability to tolerate high salinity levels.…”

Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

“…Species of the oomycetous genus Halophytophthora have wide salinity growth ranges. Isolates of H. avicenniae and H. batemanensis were able to grow at 4‰, 8‰, 16‰ and 32‰, although pH and incubation temperature had a combinatorial effect on growth [ 52 ]. The wide salinity growth ranges of Halophytophthora isolates suggest that they are well adapted to the salinity variation daily (high/low tide) and seasonally (summer/winter, rainy/dry seasons) in mangrove habitats.…”

Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

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How Do Fungi Survive in the Sea and Respond to Climate Change?

Jones

Ramakrishna

Sabaratnam

et al. 2022

JoF

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With the over 2000 marine fungi and fungal-like organisms documented so far, some have adapted fully to life in the sea, while some have the ability to tolerate environmental conditions in the marine milieu. These organisms have evolved various mechanisms for growth in the marine environment, especially against salinity gradients. This review highlights the response of marine fungi, fungal-like organisms and terrestrial fungi (for comparison) towards salinity variations in terms of their growth, spore germination, sporulation, physiology, and genetic adaptability. Marine, freshwater and terrestrial fungi and fungal-like organisms vary greatly in their response to salinity. Generally, terrestrial and freshwater fungi grow, germinate and sporulate better at lower salinities, while marine fungi do so over a wide range of salinities. Zoosporic fungal-like organisms are more sensitive to salinity than true fungi, especially Ascomycota and Basidiomycota. Labyrinthulomycota and marine Oomycota are more salinity tolerant than saprolegniaceous organisms in terms of growth and reproduction. Wide adaptability to saline conditions in marine or marine-related habitats requires mechanisms for maintaining accumulation of ions in the vacuoles, the exclusion of high levels of sodium chloride, the maintenance of turgor in the mycelium, optimal growth at alkaline pH, a broad temperature growth range from polar to tropical waters, and growth at depths and often under anoxic conditions, and these properties may allow marine fungi to positively respond to the challenges that climate change will bring. Other related topics will also be discussed in this article, such as the effect of salinity on secondary metabolite production by marine fungi, their evolution in the sea, and marine endophytes.

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Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

Section: Fungal-like Organisms and Their Response To Saline Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

How Do Fungi Survive in the Sea and Respond to Climate Change?

Jones

Ramakrishna

Sabaratnam

et al. 2022

JoF

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“…Rendahnya nilai pH selain di pengaruhi oleh faktor kualitas air juga dipengaruhi oleh aktivitas manusia dan organisme yang berada di sekitar Pesisir Teluk Kao. Masuknya bahan organik akibat aktivitas manusia dan organisme dapat menyebabkan penurunan nilai pH karena bahan organik yang dihasilkan dari aktivitas tersebut cenderung membentuk senyawa -senyawa asam yang akan menurunkan nilai pH .Kisaran nilai pH yang sesuai dengan pertumbuhan mangrove berkisar antara 7 sampai 8.5 (Su et al, 2020). Kisaran nilai pH yang terukur di perairan Sungai Tabobo dinilai sesuai untuk pertumbuhan mangrove.…”

Section: Jurnal Moluskaunclassified

Mercury Content on Mangrove Roots and Telescopium telescopium in Kao Bay, North Halmahera

Jafar

Pertiwi

2021

J. Molusk. Indones.

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The process of extracting gold using mercury (Hg) carried out by Nusa Halmahera Minerals industries (PT. NHM) as well as by the community of illegal gold mining or gold mining without a permit (PETI) that occurs in the mining area of Halmahera Island can have a negative impact on the aquatic environment. This study aims to determine the mercury absorption in mangrove roots of Rhizopora sp and Telescopium telescopium at two different stations. Sampling of mangrove roots was repeated 3 times for each station. Differences in the accumulation of heavy metals Hg in the roots of Rhizophora sp were analyzed using the T-test. The study showed that the concentration of mercury in the roots of Rhizophora sp ranged from 0.016 – 0.026 mg/kg and there were differences in root absorption between Rhizopora sp at station 1 of the Tabobo River mangrove near the PETI disposal and station 2 at the mining industry waste disposal. The concentration of mercury in Telescopium telescopium ranged from 0.08 - 0.15 mg/kg. It is indicates that Telescopium telescopium in Kao Teluk has been contaminated with mercury but is still below the threshold of the quality standard that has been set.

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“…The genus Halophytophthora comprises a group of oomycetes predominantly inhabiting marine ecosystems. They are mostly found in brackish and saline waters where they can tolerate different levels of salinity [ 2 , 3 , 4 ]. Recent reports challenge the idea that Halophytophthora spp.…”

Section: Introductionmentioning

confidence: 99%

Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient

Caballol

Štraus

Macia

et al. 2021

JoF

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Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution of Halophytophthora fluviatilis in 117 forest streams by metabarcoding river filtrates taken in spring and autumn and by direct isolation from floating leaves. Pathogenicity on six Fagaceae species and Alnus glutinosa was assessed by stem inoculations. The distribution of H. fluviatilis was correlated with high mean annual temperatures (>93.5% of reports in Ta > 12.2 °C) and low precipitation records. H. fluviatilis was therefore widely distributed in forest streams in a warm–dry climate, but it was mostly absent in subalpine streams. H. fluviatilis was primarily detected in autumn with few findings in spring (28.4% vs. 2.7% of streams). H. fluviatilis was able to cause small lesions on some tree species such as Quercus pubescens, Q. suber and A. glutinosa. Our findings suggest that H. fluviatilis may be adapted to warm and dry conditions, and that it does not pose a significant threat to the most common Mediterranean broadleaved trees.

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Salinity, pH and temperature growth ranges of Halophytophthora isolates suggest their physiological adaptations to mangrove environments

Abstract: Pang (2020): Salinity, pH and temperature growth ranges of Halophytophthora isolates suggest their physiological adaptations to mangrove environments, Mycology,

Cited by 14 publications

References 25 publications

How Do Fungi Survive in the Sea and Respond to Climate Change?

How Do Fungi Survive in the Sea and Respond to Climate Change?

Mercury Content on Mangrove Roots and Telescopium telescopium in Kao Bay, North Halmahera

Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient

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