Results 41 to 50 of about 29,697 (193)

Changes of ultrastructure and cytoplasmic free calcium in Gladiolus x hybridus Van Houtte roots infected by aster yellows phytoplasma

Acta Societatis Botanicorum Poloniae, 2011
Roots of Gladiolus x hybridus Van Houtte plants infected with aster yellows phytoplasma were examined. The infected plants had a reduced root system in comparison to control plants.
Anna Rudzińska-Langwald, Maria Kamińska   +1 more
doaj   +1 more source

Prevalence of aster yellows (AY) and elm yellows (EY) group phytoplasmas in symptomatic grapevines in three areas of northern Italy [PDF]

, 2015
Flavescence doree (FD) and others important grapevine yellows (GY) diseases are known to occur in northern Italy. In this communication we report the results of an extended survey of naturally yellows diseased grapevines growing in three provinces of ...
Bianco, P. A., Davis, R. E., Fortusini, A., Casati, P.   +3 more
core   +1 more source

Use of Aluminum-Foil and Oat-Straw Mulches for Controlling Aster Leafhopper, \u3ci\u3eMacrosteles Fascifrons\u3c/i\u3e (Homoptera: Cicadellidae), and Aster Yellows in Carrots. [PDF]

, 2017
Aluminum-foil and oat-straw mulches significantly (P \u3c 0.05) reduced aster leafhopper numbers on carrots compared to an untreated control and a malathion spray treatment during the first half of the growing season.
Dwi P Setiawan, Setiawan, Dwi P, Ragsdale, David W, David W Ragsdale   +3 more
core   +1 more source

Leafhoppers and Cixiids in Phytoplasma-infected Carrot Fields: Species Composition and Potential Phytoplasma Vectors [PDF]

Pesticidi i Fitomedicina, 2010
The first molecular analysis of samples collected in southern Bačka (Serbia) confirmed the presence of aster yellows (16SrI) and stolbur phytoplasmas (16SrXII) in insects belonging to the family Cicadellidae, as well as in carrot plants where the insects
Tanja Drobnjaković, Pantelija Perić, Dejan Marčić, Luca Picciau, Alberto Alma, Jelena Mitrović, Bojan Duduk, Assunta Bertaccini   +7 more
doaj  

Molecular identification of a phytoplasma naturally infecting Populus nigra L. cv. Italica trees in Croatia

Plant Protection Science, 2002
Leaf and branch samples of 10 Populus nigra L. cv. Italica trees were collected from the urban Zagreb area in late summer/autumn 2001. One of the trees exhibited leaf yellowing, overall sparse foliage, stunting and decline.
M. Šeruga, D. Škorić, S. Botti, S. Paltrinieri, N. Juretić, A. Bertaccini   +5 more
doaj   +1 more source

First Report of Aster Yellows Phytoplasma in Alfalfa

Plant Disease, 1999
Samples of alfalfa (Medicago sativa L.) leaves and stems showing symptoms of inter-veinal chlorosis and purpling, commonly associated with insect feeding, were collected from 8 sites in central and southern Wisconsin in autumn of 1998. Samples were frozen within 24 h of collection.
R D, Peters, M E, Lee, C R, Grau, S J, Driscoll, R M, Winberg, N C, Kurtzweil, L A, Lukaesko, I-M, Lee   +7 more
openaire   +2 more sources

New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari, Stephanie F. Piper, Kirsten Grothe, W. Derek Hamilton, Delphine Joly, Penny Bickle, Geoff Bailey   +6 more
wiley   +1 more source

AY-WB Phytoplasma Secretes a Protein That Targets Plant Cell Nuclei

Molecular Plant-Microbe Interactions, 2009
The fully sequenced genome of aster yellows phytoplasma strain witches' broom (AY-WB; Candidatus Phytoplasma asteris) was mined for the presence of genes encoding secreted proteins based on the presence of N-terminal signal peptides (SP).
Xiaodong Bai, Valdir R. Correa, Tania Y. Toruño, El-Desouky Ammar, Sophien Kamoun, Saskia A. Hogenhout   +5 more
doaj   +1 more source

Palaeoglaciations in the Polar and Subpolar Ural Mountains

Boreas, EarlyView.
The Ural Mountains form a major physiographic boundary between the East European Plain and West Siberia, both repeatedly glaciated during the Pleistocene by the Barents–Kara ice sheet. Although the present‐day topography reflects significant glacial modification, the extent, chronology and interaction of mountain glaciers with the Barents–Kara ice ...
Bartosz Kurjanski, Matteo Spagnolo, Irina Bushueva, Iestyn Barr, Brice R. Rea, Olga Solomina, Stanislav Kutuzov   +6 more
wiley   +1 more source

Prioritizing site groups for intrinsic biodiversity assets using complementarity and not just rarity

Conservation Science and Practice, EarlyView.
Conservation practitioners rightfully focus on at‐risk species when valuing biodiversity assets and prioritizing spatial units. We compared and combined numbers of at‐risk species with four other community metrics using surveys of vascular plants at wetlands in a preserve network in Illinois, USA.
Suneeti K. Jog, Jason T. Bried
wiley   +1 more source