scholarly journals Gm6PGDH1, a Cytosolic 6-Phosphogluconate Dehydrogenase, Enhanced Tolerance to Phosphate Starvation by Improving Root System Development and Modifying the Antioxidant System in Soybean

2021 ◽  
Vol 12 ◽  
Author(s):  
Cheng Li ◽  
Kangning Li ◽  
Mingming Zheng ◽  
Xinyi Liu ◽  
Xianlong Ding ◽  
...  
Keyword(s):  
Root System ◽  
Antioxidant System ◽  
System Development ◽  
Root Tip ◽  
Limiting Factor ◽  
Soybean Plant ◽  
Ros Scavenging ◽  
Phosphogluconate Dehydrogenase ◽  
Root System Development ◽  
Pi Starvation

Phosphorus plays an important role in plant growth and development, and is an important limiting factor for crop yield. Although previous studies have shown that 6-phosphogluconate dehydrogenase (6PGDH) plays an important role in plant resistance to adversity, its response to low phosphorus (P) stress remains unknown. In this study, we reported the cloning and characterization of a cytosolic 6PGDH gene, Gm6PGDH1, which enhanced the tolerance to phosphate (Pi) starvation by improving root system development and modifying the antioxidant system in transgenic plants. Gm6PGDH1 was highly expressed in the root at full bloom stage, and strongly induced by Pi starvation. The results from intact soybean composite plant and soybean plant, both containing a Gm6PGDH1-overexpressing construct, showed that Gm6PGDH1 was involved in root system development, and subsequently affected P uptake under Pi-deficient conditions. Meanwhile, the accumulation of reactive oxygen species (ROS) in the root tip of transgenic soybean was reduced, and the activity of ROS-scavenging enzymes was enhanced compared with those of the wild type under Pi-deficient conditions. Interestingly, we found that the overexpression of Gm6PGDH1 weakened the response of several other important Pi-answer genes to Pi starvation, such as some purple acid phosphatases (PAPs) and redox-related genes. In addition, the results from a virus-induced gene silencing (VIGS) indicated that Gm6PGDH1 might have functional redundancy in soybean, and the results from a heterogeneous transformation system showed that overexpressing Gm6PGDH1 also enhanced tolerance to Pi starvation in transgenic Arabidopsis. Together, these results suggested the great potential of Gm6PGDH1 in crop breeding for low Pi tolerance.

The Response of Marigold (Tagets patula) Roots in Copper-treated Plug Containers

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 466c-466
Author(s):  
Gisele Martins ◽  
Robert Geneve ◽  
Sharon Kester
Keyword(s):  
Root System ◽  
System Development ◽  
Dry Weight ◽  
Root Diameter ◽  
Root Tip ◽  
Root Tips ◽  
Latex Paint ◽  
Root System Development ◽  
Cupric Hydroxide ◽  
Effect Of Copper

A study was conducted with marigold `Little Devil Flame' to evaluate the effects of copper-treated containers on root system development in marigold (Tagets patula). The internal walls of plugs were painted or without SpinOut (Griffen Corp., Valdosta, Ga.), a form of cupric hydroxide in latex paint. Two marigold seeds were sown directly into the plugs filled with MetroMix 360 (Scott's) and thinned after 5 days. Plants were grown under standard greenhouse conditions. After 14 days, half of the plants were transplanted into 6-packs and in the other half medium was washed from and the root system were digitally analyzed using MacRhizo (Regent, Inc.). Shoot and root dry weight also were collected. Five days later, the same data were collected from the transplanted plants. Copper hydroxide reduced root and shoot growth prior to transplanting. Average root length of untreated plants was 41% larger than copper treated plants before transplanting and 25% larger after transplanting. There were no carryover effects of the copper on subsequent root growth. Copper-treated plants grew an average of 59.3 mm, while untreated plants grew 53.1 mm after transplanting. Root tips were killed when they contacted the copper-treated container surface. These roots had shorter internal and external link lengths and a greater average root diameter. It appears that the initial effect of copper on marigold roots system is to kill the root tip and inhibit further elongation. Overall branching pattern in the root system was not altered until after transplanting.

scholarly journals Timecourse Changes in Two Different Topological Indices with Seminal Root System Development of Rice.

1996 ◽  
Vol 65 (2) ◽  
pp. 303-308 ◽  
Author(s):  
Yasuhiro IZUMI ◽  
Yasuhiro KONO ◽  
Akira YAMAUCHI ◽  
Morio IIJIMA
Keyword(s):  
Root System ◽  
System Development ◽  
Topological Indices ◽  
Seminal Root ◽  
Root System Development

The Effect of Salinity on Root Architecture in Forage Pea (Pisum sativum ssp. arvense L.)

2021 ◽  
Author(s):  
S. Acikbas ◽  
M.A. Ozyazici ◽  
H. Bektas
Keyword(s):  
Root System ◽  
Root Architecture ◽  
System Development ◽  
Shoot Biomass ◽  
Growth And Survival ◽  
Legume Crop ◽  
Root System Development ◽  
Randomized Design ◽  
Salinity Levels ◽  
Root And Shoot Biomass

Background: Plants face different abiotic stresses such as salinity that affect their normal development, growth and survival. Forage pea is an important legume crop for herbage production in ruminants. Its agronomy requires high levels of irrigation and fertilization. This study aimed to evaluate the effect of salinity on seedling root system development in forage pea under semi-hydroponics conditions.Methods: Different treatment of NaCl doses (0, 50, 100, 150, 200, 250 and 300 mM) on root architecture was investigated in two different forage pea cultivars (Livioletta and Ulubatlý) with contrasting root structures under controlled conditions. The experimental design was completely randomized design with three replications and nine plants per replication.Result: Salinity affects root and shoot development differently on these cultivars. Despite the salinity, Livioletta produced more shoot (0.71 g) and root biomass (0.30 g) compared to Ulubatlý (0.52 g and 0.25 g for Root and Shoot biomass, respectively) at 150 mM and all other salinity levels. Livioletta developed a better root system and tolerated salt to a higher dose than Ulubatlý. Understanding root system responses of forage pea cultivars may allow breeding and selecting salinity tolerant cultivars with better rooting potential.

Growth and development of Hippophae rhamnoides L. introduced in Absheron

2020 ◽  
Vol 02 (03) ◽  
pp. 35-38
Author(s):  
Kamala Arastun Sadigov ◽  
Keyword(s):  
Root System ◽  
System Development ◽  
Growth Dynamics ◽  
Climatic Conditions ◽  
Hippophae Rhamnoides ◽  
Seedling Morphology ◽  
Hippophaë Rhamnoides ◽  
Root System Development ◽  
Hippophae Rhamnoïdes L ◽  
Seed Propagation

The presented article provides seed propagation, seedling morphology and growth dynamics, root system development in connection with the introduction of Hippophae rhamnoides L. species found in our natural flora in Absheron. The study found that the species Hippophae rhamnoides L. is well adapted to the soil and climatic conditions of Absheron and can be grown in cultural conditions. Key words: Hippophae rhamnoides L., introdiction, seed, repoduction, morphology, dewelopment, root system

scholarly journals Reaction of potential guava rootstocks to Meloidogyne enterolobii

Revista CERES ◽  
2018 ◽  
Vol 65 (3) ◽  
pp. 291-295 ◽  
Author(s):  
Fernando Marcelo Chiamolera ◽  
Antonio Baldo Geraldo Martins ◽  
Pedro Luiz Martins Soares ◽  
Tatiana Pagan Loeiro da Cunha-Chiamolera
Keyword(s):  
Root System ◽  
Fusarium Solani ◽  
Root Rot ◽  
System Development ◽  
Control Treatment ◽  
Root Knot Nematode ◽  
Second Stage ◽  
Root System Development ◽  
Meloidogyne Enterolobii ◽  
Reproduction Factor

ABSTRACT Root-knot nematode Meloidogyne enterolobii is the main phytosanitary problem of guava cultivation in Brazil. Among the strategies to manage the problem, the best prospects are in identifying or developing cultivars or rootstocks that are resistant to this nematode. To identify plants with potential as rootstocks for guava, the reaction of araçá (wild guava) to M. enterolobii was assessed in a greenhouse experiment. Seven araçá species were evaluated (Eugenia stipitata, Psidium acutangulum, P. cattleyanum ‘yellow’, P. friedrichsthalianum, P. guajava var. minor, P. guineense, and Psidium sp.). The plants were inoculated with a suspension of 3,000 eggs of M. enterolobii, using eggplant as control treatment. The parameters fresh root mass, number of eggs and second stage juveniles (J2) per root system, the reproduction factor (RF = Pf/Pi), and araçá reaction were determined during the experiment. RF of the araçá species E. stipitata, P. cattleyanum ‘yellow’, and P. friedrichsthalianum was less than one (RP < 1), therefore resistant to M. enterolobii. The araçá trees had good root system development and the susceptible plants showed many root galls, high number of eggs and J2, and Fusarium solani and Rhizoctonia solani root rot. The araçá species, P. cattleyanum ‘yellow’, P. friedrichsthalianum, and E. stipitata are resistant to M. enterolobii and can be tested as potential guava rootstocks.

scholarly journals Grasping root system development

Root Research ◽  
2013 ◽  
Vol 22 (3) ◽  
pp. 111-118
Author(s):  
Shigenori Morita ◽  
Nobuhito Sekiya ◽  
Jun Abe
Keyword(s):  
Root System ◽  
System Development ◽  
Root System Development

scholarly journals Correction of soil compaction using wood ash in safflower crop

2019 ◽  
pp. 1375-1382
Author(s):  
Tulio Martinez Santos ◽  
Edna Maria Bonfim Silva ◽  
Tonny José Araújo da Silva ◽  
Ana Paula Alves Barreto Damasceno
Keyword(s):  
Bulk Density ◽  
Root System ◽  
Soil Compaction ◽  
System Development ◽  
Block Design ◽  
Dry Mass ◽  
Wood Ash ◽  
Experimental Unit ◽  
Root System Development ◽  
Randomized Block Design

Soil compaction is a big limitation to food production in agriculture. Wood ash is an agro-industrial residue generated by the burning of biomass in boilers for energy production. It can be used as a corrective agent and fertilizer of the soil. In this context, the objective of this study was to evaluate the root system of safflower cultivated under bulk density levels and wood ash doses in dystrophic Oxisol. The experiment was conducted in a greenhouse with a randomized block design under a 5x5 factorial scheme composed of 5 wood ash doses (0, 8, 16, 24, 32 g dm-3) and 5 bulk density levels (1.0, 1.2, 1.4, 1.6, 1.8 Mg m-3) with 4 replicates. The soil was collected from 0-0.20 m depth layer. Later it was incubated with the respective wood ash doses. Each experimental unit consisted of a pot made of three PVC (polyvinyl chloride) rings, in which the layers of 0.1-0.2 m were compacted. At 75 days after emergence, the plants were cut, their roots washed and the volume and dry mass checked. The results were submitted to analysis of variance and subsequent regression test, both at 5% probability. Soil densities negatively influenced the root system development and culture of safflower. Application of wood ash doses of 20 to 24 g dm-3 significantly improved root development of plant.

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