In Australia disease caused by Phytophthora cinnamomi can have devastating impacts on native vegetation, especially on plant species with restricted distributions. The identification of susceptible threatened species is a crucial first step in understanding disease aetiology and selecting appropriate management. In a glasshouse trial, plants of 16 rare and threatened New South Wales native species from 10 families were inoculated with the pathogen. Phebalium squamulosum spp. alpinum was included as a susceptible control. We found that three species are highly susceptible to the pathogen (Nematolepis rhytidophylla (Albr. & N.G.Walsh) Paul G.Wilson, Prostanthera marifolia R.Br., Pultenaea sp. ‘Genowlan Point’); four others (Hibbertia spanantha Toelken & A.F.Rob, Phebalium bifidum P.H.Weston & M.J.Turton, Plinthanthesis rodwayi (C.E.Hubb.) S.T.Blake, Pomaderris delicata N.G.Walsh & Coates) are likely to be susceptible based on symptoms. The remaining species had few or no plant deaths and no pathogen recovery from the roots. All of the species regarded as highly susceptible are known from single populations. Following these results, subsequent research will assess the efficacy of prophylactic treatment on highly susceptible threatened species, and test whether glasshouse tests are indicative of field responses. Other threatened species will also be tested for susceptibility.

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新南威尔士州稀有和受威胁物种对根腐病病原体肉桂疫霉的易感性：1. 关键研究问题的初步测试和鉴定

在澳大利亚，由肉桂疫霉引起的疾病会对本地植被造成破坏性影响，尤其是对分布受限的植物物种。识别易受威胁的物种是了解疾病病因和选择适当管理的关键第一步。在温室试验中，来自 10 个科的 16 种稀有和受威胁的新南威尔士本地物种的植物接种了病原体。Phebalium squamulosum spp. alpinum 被包括在内作为易感对照。我们发现三个物种对病原体高度敏感（Nematolepis rhytidophylla (Albr. & NGWalsh) Paul G.Wilson、Prostanthera marifolia R.Br.、Pultenaea sp.'Genowlan Point'）；其他四个（Hibbertia spanantha Toelken & AFRob、Phebalium bifidum PHWeston & MJTurton、Plinthanthesis rodwayi (CEHubb. ) STBlake, Pomaderris delicata NGWalsh & Coates) 根据症状可能易感。其余物种很少或没有植物死亡，也没有从根部恢复病原体。所有被认为高度易感的物种都是从单一种群中得知的。根据这些结果，后续研究将评估对高度易感受威胁物种进行预防性治疗的功效，并测试温室测试是否表明现场反应。其他受威胁物种也将接受敏感性测试。随后的研究将评估对高度易感的受威胁物种进行预防性治疗的功效，并测试温室试验是否表明现场反应。其他受威胁物种也将接受敏感性测试。随后的研究将评估对高度易感的受威胁物种进行预防性治疗的功效，并测试温室试验是否表明现场反应。其他受威胁物种也将接受敏感性测试。