Results 51 to 60 of about 658 (163)
Fusarium oxysporum Fo47 primes flax by locally suppressing pathogens in roots and systemically activating antioxidant defences in shoots, offering a sustainable plant protection strategy. ABSTRACT Plants rely on specialised adaptive mechanisms to enhance resistance against environmental stress.
Marta Burgberger +2 more
wiley +1 more source
نقش توکسین سراتواُلمین در بیماریزایی و بقای دو گونه قارچ Ophiostoma ulmi و Ophiostoma novo-ulmi (عاملین بیماری مرگ هلندی نارون) [PDF]
سراتواُلمین مهمترین توکسیـن عامل قارچی بیـماری مرگ هلندی نارون است و مقـدار آن یکی از مهمترین عوامل تفکیـک دو گونه Ophiostoma ulmi و Ophiostoma novo-ulmi میباشد. با توجـه به اینکه گونـه O. novo-ulmi در مقایسه با گونه O. ulmi از شدت بیماریزایی بیشتری
doaj
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
Commodity risk assessment of Vitis spp. plants from Moldova
Abstract The European Commission requests EFSA to provide scientific opinions in the field of plant health in accordance with Article 29 of Regulation (EC) No 178/2002. Annex VI of Commission Implementing Regulation (EU) 2019/2072 lists plants, plant products and other objects whose introduction into the Union from certain third countries is prohibited.
EFSA Panel on Plant Health (PLH) +37 more
wiley +1 more source
Variation in Response of Selected American Elm Clones to Ophiostoma ulmi [PDF]
Abstract Ramets of nine American elm (Ulmus americana L.) clones or cultivars were planted with ramets of Ulmus ‘Frontier’, Ulmus ‘Prospector’, and American elm seedlings in a randomized block, split-plot design. When they were three years old, the trees were inoculated in the main trunk on either one of two selected dates in May with a spore ...
A.M. Townsend, S.E. Bentz, G.R. Johnson
openaire +1 more source
Elms, and especially Ulmus × hollandica have been dominant and very much appreciated trees in cities and rural landscape for centuries in the Netherlands.
Buiteveld J +2 more
doaj +1 more source
The Spanish elm programme began in 1986 in response to the devastating impact of Dutch elm disease on natural elm stands and urban trees. Its main objectives were to conserve remaining genetic resources and select and breed tolerant native elm genotypes.
Martín Juan A +9 more
doaj +1 more source
ABSTRACT Biological invasions are one of the major drivers of biodiversity decline and have been shown to have far‐reaching consequences for society and the economy. Preventing the introduction and spread of alien species represents the most effective solution to reducing their impacts on nature and human well‐being.
Hanno Seebens +64 more
wiley +1 more source
Factors Affecting Growth of Ophiostoma ulmi on Elm Callus Tissue
Abstract We examined growth of the Dutch elm disease fungus, Ophiostoma ulmi, on callus derived from a susceptible American elm (Ulmus amencana, selection A), an American elm of intermediate resistance (U. americana, selection 8630), and a resistant Siberian elm (Ulmus pumlia) at 16, 22, and 28°C (61,72, and 83°F) and inoculation concentrations
Subhash C. Domir +2 more
openaire +1 more source
ABSTRACT The increasing global demand for products derived from Eucalyptus spp. has stimulated its production in Brazil. However, productivity has declined in recent years due to several factors, with Ceratocystis wilt being one of the most significant.
Márcia I. L. Santiago +4 more
wiley +1 more source

