scholarly journals S-Nitrosoglutathione Reductase-Modulated Redox Signaling Controls Sodic Alkaline Stress Responses in Solanum lycopersicum L.

2014 ◽  
Vol 56 (4) ◽  
pp. 790-802 ◽  
Author(s):  
Biao Gong ◽  
Dan Wen ◽  
Xiufeng Wang ◽  
Min Wei ◽  
Fengjuan Yang ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Stress Responses ◽  
Redox Signaling ◽  
Alkaline Stress ◽  
Solanum Lycopersicum L

scholarly journals Comparative Physiological and Biochemical Changes in Tomato (Solanum lycopersicum L.) Under Salt Stress and Recovery: Role of Antioxidant Defense and Glyoxalase Systems

Antioxidants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 350 ◽  
Author(s):  
Parvin ◽  
Hasanuzzaman ◽  
Bhuyan ◽  
Nahar ◽  
Mohsin ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Plant Growth ◽  
Solanum Lycopersicum ◽  
Nutrient Solution ◽  
Stress Responses ◽  
Antioxidant Defense ◽  
Oxygen Species ◽  
Tomato Plants ◽  
Solanum Lycopersicum L ◽  
Post Stress

Salinity toxicity and the post-stress restorative process were examined to identify the salt tolerance mechanism in tomato, with a focus on the antioxidant defense and glyoxalase systems. Hydroponically grown 15 day-old tomato plants (Solanum lycopersicum L. cv. Pusa Ruby) were treated with 150 and 250 mM NaCl for 4 days and subsequently grown in nutrient solution for a further 2 days to observe the post-stress responses. Under saline conditions, plants showed osmotic stress responses that included low leaf relative water content and high proline content. Salinity induced oxidative stress by the over-accumulation of reactive oxygen species (H2O2 and O2•−) and methylglyoxal. Salinity also impaired the non-enzymatic and enzymatic components of the antioxidant defense system. On the other hand, excessive Na+ uptake induced ionic stress which resulted in a lower content of other minerals (K+, Ca2+, and Mg2+), and a reduction in photosynthetic pigment synthesis and plant growth. After 2 days in the normal nutrient solution, the plants showed improvements in antioxidant and glyoxalase system activities, followed by improvements in plant growth, water balance, and chlorophyll synthesis. The antioxidant and glyoxalase systems worked in concert to scavenge toxic reactive oxygen species (ROS), thereby reducing lipid peroxidation and membrane damage. Taken together, these findings indicate that tomato plants can tolerate salinity and show rapid post-stress recovery by enhancement of their antioxidant defense and glyoxalase systems.

Using Transcriptome to Discover a Novel Melatonin-Induced Sodic Alkaline Stress Resistant Pathway in Solanum lycopersicum L.

2019 ◽  
Vol 60 (9) ◽  
pp. 2051-2064 ◽  
Author(s):  
Yanyan Yan ◽  
Xin Jing ◽  
Huimeng Tang ◽  
Xiaotong Li ◽  
Biao Gong ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Stress Responses ◽  
Transcriptional Control ◽  
Alkaline Treatment ◽  
Transcriptional Factors ◽  
Alkaline Stress ◽  
Virus Induced Gene Silencing ◽  
Downstream Signaling ◽  
Ph Buffering ◽  
Solanum Lycopersicum L

Abstract Melatonin plays important roles in multiple stress responses. However, the downstream signaling pathway and molecular mechanism are unclear until now. Here, we not only revealed the transcriptional control of melatonin-induced sodic alkaline stress tolerance, but also described a screen for key downstream transcriptional factors of melatonin through transcriptome analysis. The melatonin-induced transcriptional network of hormone, transcriptional factors and functional genes has been established under both control and stress conditions. Among these, six candidates of transcriptional factors have been identified via Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis. Using the virus-induced gene silencing approach, we confirmed that DREB1α and IAA3 were key downstream transcriptional factors of melatonin-induced sodic alkaline stress tolerance at the genetic level. The transcriptions of DREB1α and IAA3 could be activated by melatonin or sodic alkaline treatment. Interestingly, we found that DREB1α could directly upregulate the expression of IAA3 by binding to its promoters. Moreover, several physiological processes of Na+ detoxification, dehydration resistance, high pH buffering and reactive oxygen species scavenging were confirmed to depend or partly depend on DREB1α and IAA3 pathway in melatonin-induced stress tolerance. Taken together, this study suggested that DREB1α and IAA3 are positive resistant modulators, and provided a direct link among melatonin, DREB1α and IAA3 in the sodic alkaline stress tolerance activating in tomato plants.

Evaluación de tres enraizadores comerciales en la producción de plántulas de tomate indeterminado (Solanum lycopersicum (L.) Lam)

2019 ◽  
Vol 12 (12) ◽  
Author(s):  
M. Arébalo-Madrigal ◽  
J.L. Escalante-González ◽  
J.B. Yáñez-Coutiño ◽  
M.E. Gallegos-Castro
Keyword(s):  
Solanum Lycopersicum ◽  
Solanum Lycopersicum L

Objetivo: Evaluar el desarrollo de plántula de tomate indeterminado bajo condiciones protegidas, aplicando  tres enraizadores  y un testigo para aumentar la producción del cultivo en la región. Diseño/metodología/aproximación: se utilizó bajo un diseño experimental en bloques completamente al azar, el cual consistió de cuatro tratamientos correspondiendo a cada uno de los bloques, donde cada bloque pertenecía a cuatro charolas de unicel de 200 cavidades con sustrato de BM2, con cuatro repeticiones cada uno, teniendo 15 unidades experimentales por tratamiento, sumando un total de 60 unidades experimentales, teniendo un total de 240 plántulas de tomate por todo el experimento. Resultados: Como resultado se obtuvo que el enraizador de Phyto Root  tuvo un gran efecto en cuanto al desarrollo de altura, grosor de tallo, numero de hojas, biomasa aérea y peso del cepellón, parámetros importantes que debe tener una plántula para su desarrollo y crecimiento al momento de trasplante a campo. Limitaciones del estudio/implicaciones: El manejo agronómico desde la siembra en charolas, es necesario que sea uniforme en todos los tratamientos y las repeticiones para tener mejores resultados en cuanto el efecto de los enraizadores. Hallazgos/conclusiones: Para obtener plántulas de buena calidad en el momento de trasplante a campo se le recomienda a la empresa y a los productores de plántulas utilizar el tratamiento de Phyto Root, ya que fue la que mejor respuesta tuvo.

Expression of antioxidant genes can increase cold resistance in tomato (Solanum lycopersicum L.)

2020 ◽  
Vol 53 (2) ◽  
Author(s):  
Javaria Chand ◽  
Rafiq Ahmad ◽  
Muhammad Shahzad ◽  
Muhammad Sohail Khan ◽  
Noorullah Khan ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Cold Resistance ◽  
Antioxidant Genes ◽  
Solanum Lycopersicum L

Морфо-биологическая и цитологическая характеристика регенерирующих корней томата ( Solanum lycopersicum L.) сорта “Рекордсмен” в условиях NaCl-засоления in vitro

Tsitologiya ◽  
2019 ◽  
Vol 61 (12) ◽  
pp. 998-1013
Author(s):  
Л. Р. Богоутдинова ◽  
Е. Н. Баранова ◽  
Г. Б. Баранова ◽  
Н. В. Кононенко ◽  
Е. М. Лазарева ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Solanum Lycopersicum L

scholarly journals Oligonucleotide array discovery of polymorphisms in cultivated tomato (Solanum lycopersicum L.) reveals patterns of SNP variation associated with breeding

BMC Genomics ◽  
2009 ◽  
Vol 10 (1) ◽  
pp. 466 ◽  
Author(s):  
Sung-Chur Sim ◽  
Matthew D Robbins ◽  
Charles Chilcott ◽  
Tong Zhu ◽  
David M Francis
Keyword(s):  
Solanum Lycopersicum ◽  
Oligonucleotide Array ◽  
Solanum Lycopersicum L
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