Growth promotion and protection against root rot of sugar beet (Beta vulgaris L.) by two rock phosphate and potassium solubilizing Streptomyces spp. under greenhouse conditions

2022 ◽  
Author(s):  
Yassine Aallam ◽  
Driss Dhiba ◽  
Taoufik El Rasafi ◽  
Sanaa Lemriss ◽  
Abdelmajid Haddioui ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Root Rot ◽  
Rock Phosphate ◽  
Growth Promotion ◽  
Streptomyces Spp

Molecular mapping of a gene conferring resistance to Aphanomyces root rot (black root) in sugar beet (Beta vulgaris L.)

Euphytica ◽  
2010 ◽  
Vol 173 (3) ◽  
pp. 409-418 ◽  
Author(s):  
Kazunori Taguchi ◽  
Kazuyuki Okazaki ◽  
Hiroyuki Takahashi ◽  
Tomohiko Kubo ◽  
Tetsuo Mikami
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Root Rot ◽  
Molecular Mapping

scholarly journals Phytotoxicity of the new metabolites produced by Phoma betae, the cause of phoma root rot and leaf spot in sugar beet (Beta vulgaris L.).

1985 ◽  
Vol 51 (2) ◽  
pp. 219-222 ◽  
Author(s):  
Ryutaro SAKAI ◽  
Yosuke MINO ◽  
Akitami ICHIHARA ◽  
Sadao SAKAMURA
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Leaf Spot ◽  
Root Rot ◽  
Phoma Betae ◽  
New Metabolites

scholarly journals Potential of endophytic Streptomyces spp. for biocontrol of Fusarium root rot disease and growth promotion of tomato seedlings

2016 ◽  
Vol 26 (12) ◽  
pp. 1691-1705 ◽  
Author(s):  
Yacine Goudjal ◽  
Miyada Zamoum ◽  
Nasserdine Sabaou ◽  
Florence Mathieu ◽  
Abdelghani Zitouni
Keyword(s):  
Root Rot ◽  
Growth Promotion ◽  
Fusarium Root Rot ◽  
Tomato Seedlings ◽  
Root Rot Disease ◽  
Streptomyces Spp ◽  
Endophytic Streptomyces ◽  
Rot Disease

scholarly journals First Report of Aphanomyces Root Rot of Sugar Beet in Nebraska and Wyoming

Plant Disease ◽  
2000 ◽  
Vol 84 (5) ◽  
pp. 596-596 ◽  
Author(s):  
R. M. Harveson
Keyword(s):  
Sugar Beet ◽  
Beta Vulgaris ◽  
Root Rot ◽  
Causal Agent ◽  
High Plains ◽  
Sugar Beets ◽  
Koch’S Postulates ◽  
First Report ◽  
Aphanomyces Cochlioides ◽  
Central High

Sugar beet (Beta vulgaris L.) plants exhibiting dull green and chlorotic foliage were first observed in a field near Dalton, NE, in late July 1999. Root symptoms included distal tip rot with internal, yellow-brown, water-soaked tissues. Isolations on MBV medium (1) consistently yielded Aphanomyces cochlioides Drechs. Water cultures produced primary zoospores that encysted at the tips of sporangiophores, followed by release of secondary zoospores within 12 h. Seedlings inoculated with zoospores began to die 2 weeks after emergence in a greenhouse. Symptoms on hypocotyls began as water-soaked lesions that turned black and thread-like. The causal agent was reisolated from infected seedlings, completing Koch's postulates. The disease was subsequently found in more than 15 separate fields, representing 5 of 11 sugar beet-growing counties in Nebraska and 1 county in Wyoming. In October, plants from the same fields were observed with stunted, distorted roots and superficial, scabby lesions associated with latent A. cochlioides infection. The pathogen could not be isolated from this stage but was confirmed by observing mature oospores within thin, stained sections under a microscope. The sections were additionally mixed with sterile potting soil and planted in the greenhouse with sugar beets. Several weeks after emergence, seedlings began to die, and the pathogen was reisolated. This represents the first report of Aphanomyces root rot and its spread in the Central High Plains. It also confirms that the described latent symptoms on sugar beet are caused by A. cochlioides. Reference: (1). W. F. Pfender et al. Plant Dis. 68:845, 1984.

scholarly journals Differentiation of the disease caused by Aphanomyces cochlioides and girth scab on sugar beet roots – a review

2016 ◽  
Vol 53 (No. 2) ◽  
pp. 71-77
Author(s):  
Moliszewska Eva B
Keyword(s):  
Sugar Beet ◽  
Root Rot ◽  
Weather Conditions ◽  
Seedling Stage ◽  
Aphanomyces Cochlioides ◽  
Streptomyces Spp ◽  
Current Classification ◽  
Further Development ◽  
Rainfall Level

Severe symptoms of root rot on sugar beet have been observed in Poland and Germany since 2001. The symptom classification suggested girth scab as it was mistakenly classified on the basis of current classification, e.g. in LIZ. However, the cause of the disease was Aphanomyces cochlioides infection, not Streptomyces spp. According to these findings we cannot call the symptoms caused by A. cochlioides as ‘girth scab’. The typical scab (girth scab) symptoms can be promoted by A. cochlioides infections. In many cases, A. cochlioides developed at the beginning of the season, during the seedling stage. Its further development was due to rainfall and was not routinely recognised in disease-changed tissues if in the middle of the summer the rainfall level was reduced. According to the described findings, renewed description and differentiation of the girth scab symptoms caused by Streptomyces spp. and root rot caused by A. cochlioides on sugar beet roots are suggested. Typical symptoms of the disease caused by A. cochlioides occur mainly on the upper part of the root but can also occur on its lower part, if weather conditions are favourable for the pathogen. The coexistence of A. cochlioides and Pythium spp. in the same niches is also possible. Currently the illustrations showing these symptoms are included in the ‘girth scab’ descriptions.

Plant regeneration from protoplasts of sugar beet (Beta vulgaris)

1995 ◽  
Vol 94 (2) ◽  
pp. 342-350 ◽  
Author(s):  
Steffen Lenzner ◽  
Kurt Zoglauer ◽  
Otto Schieder
Keyword(s):  
Plant Regeneration ◽  
Sugar Beet ◽  
Beta Vulgaris
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