scholarly journals Vernalisation mediated LncRNA-like gene expression in Beta vulgaris

2017 ◽  
Vol 44 (7) ◽  
pp. 720 ◽  
Author(s):  
Naiguo Liang ◽  
Dayou Cheng ◽  
Jie Cui ◽  
Cuihong Dai ◽  
Chengfei Luo ◽  
...  
Keyword(s):  
Gene Expression ◽  
Life Cycle ◽  
Sugar Beet ◽  
Beta Vulgaris ◽  
Cold Exposure ◽  
First Year ◽  
Future Studies ◽  
Long Day ◽  
Regulation Mechanisms ◽  
First Time

Sugar beet (Beta vulgaris L.) cannot form reproductive shoots during the first year of their life cycle. Flowering only occurs if plants are vernalised and are subsequently exposed to long days. However, the vernalisation mechanism remains poorly understood in sugar beet. Three putative lncRNAs associated with vernalisation (AGL15X1, AGL15X2 and CAULIFLOWER A) were investigated and the hypothesis that their expression occurred in response to vernalisation was experimentally tested. The regulation mechanisms of BvRAV1-like, lncRNA-like genes, BvFT1 and BvFT2 were also examined. The BvRAV1-like gene associated with vernalisation in sugar beet was validated for the first time. Our data confirmed the hypothesis that AGLX2 was the first candidate lncRNA of sugar beet and the BvRAV1-like gene was expressed in response to vernalisation. BvRAV1-like and AGLX2 genes might be coordinated with BvFT2 to promote reproductive growth by repressing BvFT1 during cold exposure followed by long day conditions. A new complementary flowering model of sugar beet was proposed. Our findings opened up new possibility for future studies and further illuminated the molecular mechanism of vernalisation in sugar beet.

First Report of Leaf Blight of Sugar Beet (Beta vulgaris) Caused by Sclerotinia sclerotiorum in Minnesota, U.S.A.

2021 ◽  
pp. PHP-02-21-0048-
Author(s):  
Mohamed F. R. Khan ◽  
Md. Ziaur Rahman Bhuiyan ◽  
Yangxi Liu ◽  
Dilip Lakshman ◽  
Mark Bloomquist
Keyword(s):  
United States ◽  
Sugar Beet ◽  
Beta Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Internal Transcribed Spacer ◽  
Economic Loss ◽  
The United States ◽  
Morphological Data ◽  
Varietal Resistance ◽  
First Time

Minnesota is the top sugar beet (Beta vulgaris L.) producing state in the United States. In 2020, sugar beet plants were observed for the first time in which the two to three oldest leaves had light brown to dark brown necrotic leaf lesions that eventually became yellow or brown and died but remained attached to the plant. Morphological data and sequences of internal transcribed spacer regions identified the pathogen as Sclerotinia sclerotiorum. Because over 90% of the plants in identified fields were infected it was difficult to quantify loss in yield or quality caused by this disease. All fields with symptomatic plants had soybean or edible beans in the rotation. One field planted to several different varieties indicated that all the varieties were symptomatic. It will be useful to determine any economic loss caused by S. sclerotiorum and any known varietal resistance to this pathogen.

scholarly journals The first record of Litargus tetraspilotus (Coleoptera, Mycetophagidae) in Brazil, with biological notes and complementary description of the species

2011 ◽  
Vol 101 (1-2) ◽  
pp. 24-32
Author(s):  
Julianne Milléo ◽  
Jonathan P Castro ◽  
Cibele S Ribeiro-Costa ◽  
Jana M. T. de Souza
Keyword(s):  
Life Cycle ◽  
Relative Humidity ◽  
Significant Positive Correlation ◽  
Fruit Trees ◽  
First Record ◽  
Future Studies ◽  
Positive Correlation ◽  
Laboratory Conditions ◽  
Present Information ◽  
First Time

Litargus tetraspilotus LeConte, 1856 was collected feeding on Oidium sp. (Fungi, Ascomycota, Erysiphaceae) associated with fruit trees. This is the first time L. tetraspilotus is recorded in Brazil, totaling three species of Mycetophagidae for this country. This study aims to provide a complementary description of this species based on new characters and to present information on its life cycle under laboratory conditions and fluctuation in population in the field. During the period of inventories between July 2004 and August 2006, about every fifteen days, a total of 565 specimens of L. tetraspilotus were collected, with the highest abundance found on citrus plants, with values differing significantly between the two years. The population levels differed between the seasons; spring had the greatest abundance and autumn the least. There was a significant positive correlation of L. tetraspilotus abundance with rainfall and relative humidity. Mycetophagidae, as well as other mycophagous families of Brazilian coleopterans, are barely studied, warranting further future studies of their bioecology and systematics.

scholarly journals Multi-Omics Data Integration Reveals Link Between Epigenetic Modifications and Gene Expression in Sugar Beet (Beta Vulgaris Subsp. Vulgaris) in Response to Cold

2021 ◽  
Author(s):  
Sindy Gutschker ◽  
José Maria Corral ◽  
Alfred Schmiedl ◽  
Frank Ludewig ◽  
Wolfgang Koch ◽  
...  
Keyword(s):  
Gene Expression ◽  
Dna Methylation ◽  
Sugar Beet ◽  
Beta Vulgaris ◽  
Environmental Conditions ◽  
Epigenetic Modifications ◽  
Dna Demethylation ◽  
Omics Data ◽  
Dna Hypomethylation ◽  
Transcriptional Responses

Abstract BackgroundDNA methylation is thought to influence the expression of genes, especially in response to changing environmental conditions and developmental changes. Sugar beet (Beta vulgaris ssp. vulgaris), and other biennial or perennial plants are inevitably exposed to fluctuating temperatures throughout their lifecycle and might even require such stimulus to acquire floral competence. Therefore, plants such as beets, need to fine-tune their epigenetic makeup to ensure phenotypic plasticity towards changing environmental conditions while at the same time steering essential developmental processes. Different crop species may show opposing reactions towards the same abiotic stress, or, vice versa, identical species may respond differently depending on the specific kind of stress. ResultsIn this study, we investigated common effects of cold treatment on genome-wide DNA methylation and gene expression of two Beta vulgaris accessions via multi-omics data analysis. Cold exposure resulted in a pronounced reduction of DNA methylation levels, which particularly affected methylation in CHH context (and to a lesser extent CHG) and was accompanied by transcriptional downregulation of the chromomethyltransferase CMT2 and strong upregulation of several genes mediating active DNA demethylation. Conclusion Integration of methylomic and transcriptomic data revealed that, rather than methylation having directly influenced expression, epigenetic modifications correlated with changes in expression of known players involved in DNA (de)methylation. In particular, cold triggered upregulation of genes putatively contributing to DNA demethylation via the ROS1 pathway. Our observations suggest that these transcriptional responses precede the cold-induced global DNA-hypomethylation in non-CpG, preparing beets for additional transcriptional alterations necessary for adapting to upcoming environmental changes.

Some effects of infection with yellowing viruses and of fungicide applications on bolting in sugar beet

1967 ◽  
Vol 68 (3) ◽  
pp. 405-409
Author(s):  
G. E. Russell
Keyword(s):  
Low Temperature ◽  
Sugar Beet ◽  
Gibberellic Acid ◽  
Environmental Conditions ◽  
Growth Substance ◽  
Minimum Time ◽  
First Year ◽  
Naturally Occurring ◽  
Long Day ◽  
Selection For

Sugar-beet plants require an appropriate sequence of environmental conditions to change from the vegetative to the reproductive phase during the first year of growth. When plants bolt, the stem lengthens and bears flowers and the stem and root become lignified. Bolting is normally induced by a period of low temperature followed by higher temperatures and long-day conditions. The minimum time necessary, under these conditions, for initiation of bolting varies greatly with individual plants, susceptibility to bolting being genetically controlled. Intensive selection for resistance to bolting has resulted in the production of varieties which are highly resistant to bolting (e.g. Bell & Bauer, 1942; Campbell, 1953; Campbell & Russell, 1964). Elongation of the stem can be induced, without normal vernalization, by spraying beet plants with the naturally occurring growth substance gibberellic acid (Gaskill, 1957; Campbell, 1958). It has also been reported that infection with virus yellows sometimes affects the incidence of bolting (Desprez, 1959), although it has not been recorded which of the two common yellowing viruses in Europe is responsible.

Post-harvest regulated gene expression and splicing efficiency in storage roots of sugar beet (Beta vulgaris L.)

Planta ◽  
2008 ◽  
Vol 227 (6) ◽  
pp. 1321-1332 ◽  
Author(s):  
Alexander Rotthues ◽  
Jeannette Kappler ◽  
Anna Lichtfuß ◽  
Dorothee U. Kloos ◽  
Dietmar J. Stahl ◽  
...  
Keyword(s):  
Gene Expression ◽  
Sugar Beet ◽  
Beta Vulgaris ◽  
Storage Roots ◽  
Post Harvest ◽  
Splicing Efficiency ◽  
Regulated Gene Expression

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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