Effects of Russian wheat aphid infestation on barley plant response to drought stress

In some rice dominated tropical regions, such as in Indonesia, soybeans are an increasingly important dry season crop which are often exposed to periods of drought stress. The morphological and physiological responses, which could lead to some tolerance to water stress, may vary between varieties. By better understanding the plant response to drought stress and finding if these responses vary between varieties better dry season production could be achieved. An experiment was conducted to compare the response of four varieties of soybean (glycine max (l.) Meer.) to five watering regimes, with the objective of determining the response of common soybean varieies across a wide range of water supply. Plant response to water supply was measured using gas exchange measurement with the rate of photo synthesis decreasing progressively from well watered to dry conditions across the four varieties. A correlation of stomatal conductance and transpiration rate has a close relationship with photosynthetic rate, where stomatal conductance of Burangrang variety has higher value than other varieties. Varieties Burangrang and Argomulyo stomatal conductances are higher value than those of Anjasmoro and Grobogan varieties. In a deficit of water condition, the Argomulyo varieties have a higher value of transpiration efficiency and significantly different than the other three varieties. The transpiration efficiency significantly declined for treatments watered once every two or three weeks. The transpiration efficiency values of Agromulyo and Burangrang varieties were significantly higher than another varieties.

Download Full-text

Genome-wide association of barley plant growth under drought stress using a nested association mapping population

BMC Plant Biology ◽

10.1186/s12870-019-1723-0 ◽

2019 ◽

Vol 19 (1) ◽

Cited By ~ 16

Author(s):

Anh-Tung Pham ◽

Andreas Maurer ◽

Klaus Pillen ◽

Chris Brien ◽

Kate Dowling ◽

...

Keyword(s):

Drought Stress ◽

Plant Growth ◽

Association Mapping ◽

Mapping Population ◽

Genome Wide Association ◽

Barley Plant ◽

Nested Association Mapping ◽

Genome Wide ◽

Nested Association Mapping Population ◽

Association Mapping Population

Download Full-text

Aphid fecundity and defenses in wheat exposed to a combination of heat and drought stress

Journal of Experimental Botany ◽

10.1093/jxb/eraa017 ◽

2020 ◽

Vol 71 (9) ◽

pp. 2713-2722 ◽

Cited By ~ 4

Author(s):

Haicui Xie ◽

Jianqin Shi ◽

Fengyu Shi ◽

Haiyun Xu ◽

Kanglai He ◽

...

Keyword(s):

Abscisic Acid ◽

Drought Stress ◽

Water Content ◽

Relative Water Content ◽

Nutritional Quality ◽

Defense Responses ◽

Net Reproductive Rate ◽

Aphid Infestation ◽

Grain Aphid ◽

Relative Water

Abstract Plants are routinely subjected simultaneously to different abiotic and biotic stresses, such as heat, drought, and insect infestation. Plant–insect interactions in such complex stress situations are poorly understood. We evaluated the performance of the grain aphid (Sitobion avenae) in wheat (Triticum aestivum L.) exposed to a combination of heat and drought stresses. We also performed assays of the relative water content, nutritional quality, and responses of phytohormone signaling pathways. Lower relative water content and accumulation of soluble sugars and amino acids were observed in plants exposed to combined heat and drought stress. These conditions increased abscisic acid levels in the absence of aphids, as well as leading to higher levels of jasmonate-dependent transcripts. The grain aphid infestation further increased abscisic acid levels and the abundance of jasmonic acid- and salicylic acid-dependent defenses under the combined stress conditions. Aphids reared on plants grown under drought stress alone showed lower net reproductive rates, intrinsic rates of increase, and finite rates of increase compared with aphids reared on plants in the absence of stress. The heat-treated plants also showed a decreased aphid net reproductive rate. These findings demonstrate that exposure to a combination of stresses enhances plant defense responses against aphids as well as altering nutritional quality.

Download Full-text

The Arabidopsis paralogs, PUB46 and PUB48, encoding U-box E3 ubiquitin ligases, are essential for plant response to drought stress

BMC Plant Biology ◽

10.1186/s12870-016-0963-5 ◽

2017 ◽

Vol 17 (1) ◽

Cited By ~ 20

Author(s):

Guy Adler ◽

Zvia Konrad ◽

Lyad Zamir ◽

Amit Kumar Mishra ◽

Dina Raveh ◽

...

Keyword(s):

Drought Stress ◽

Ubiquitin Ligases ◽

Plant Response ◽

E3 Ubiquitin Ligases

Download Full-text

Phytohormone Cross-Talk Synthesizes Glycoalkaloids in Potato (Solanum tuberosum L.) in Response to Aphid (Myzus persicae Sulzer) Infestation under Drought Stress

Insects ◽

10.3390/insects11110724 ◽

2020 ◽

Vol 11 (11) ◽

pp. 724

Author(s):

Peter Quandahor ◽

Yuping Gou ◽

Chunyan Lin ◽

Mohammed Mujitaba Dawuda ◽

Jeffrey A. Coulter ◽

...

Keyword(s):

Drought Stress ◽

Cross Talk ◽

Green Peach Aphid ◽

Solanum Tuberosum L ◽

Insect Pest ◽

Potato Production ◽

High Water ◽

High Water Content ◽

Aphid Infestation ◽

Green Peach Aphids

Potato production is adversely affected by aphid infestation across the globe. Understanding the mechanism of host plant defense against aphids under drought stress is paramount for insect pest management. This study was conducted to examine the cross-talk of phytohormones in potato glycoalkaloids’ defense against green peach aphids under greenhouse conditions. A 3 × 2 × 2 factorial experiment comprising three potato cultivars (Qingshu 9, Longshu 3, and Atlantic) and two levels each of water availability and aphid infestation was conducted. The results show that under drought stress, green peach aphids thrive well on host plants, which contain a relatively high water content. The resistant cultivar DXY, which exhibited a higher level of phytohormones, also demonstrated higher α-chaconine and α-solanine contents in both leaf and root, under drought and aphid stress. Conversely, the susceptible cultivar QS9, which exhibited a lower level of phytohormones, also demonstrated low α-chaconine and α-solanine contents in both leaf and root, under drought and aphid stress. The DXY cultivar, which possessed high resistant traits such as α-chaconine and α-solanine, can be used in areas where green peach aphid infestation is a major setback.

Download Full-text

High spectral and spatial resolution hyperspectral imagery for quantifying Russian wheat aphid infestation in wheat using the constrained energy minimization classifier

Journal of Applied Remote Sensing ◽

10.1117/1.jrs.8.083661 ◽

2014 ◽

Vol 8 (1) ◽

pp. 083661 ◽

Cited By ~ 13

Author(s):

Mustafa Mirik ◽

R. James Ansley ◽

Karl Steddom ◽

Charles M. Rush ◽

Gerald J. Michels ◽

...

Keyword(s):

Spatial Resolution ◽

Energy Minimization ◽

Hyperspectral Imagery ◽

Russian Wheat Aphid ◽

Aphid Infestation

Download Full-text

Virus-Induced Gene Silencing Suggests (1,3;1,4)-β-glucanase Is a Susceptibility Factor in the Compatible Russian Wheat Aphid–Wheat Interaction

Molecular Plant-Microbe Interactions ◽

10.1094/mpmi-05-13-0141-r ◽

2014 ◽

Vol 27 (9) ◽

pp. 913-922 ◽

Cited By ~ 9

Author(s):

Victoria A. Anderson ◽

Scott D. Haley ◽

Frank B. Peairs ◽

Leon van Eck ◽

Jan E. Leach ◽

...

Keyword(s):

Gene Silencing ◽

Host Plant ◽

Insect Pest ◽

Durable Resistance ◽

Resistance Breeding ◽

Russian Wheat Aphid ◽

Symptom Development ◽

Virus Induced Gene Silencing ◽

Aphid Infestation ◽

Susceptibility Factor

The Russian wheat aphid (RWA), Diuraphis noxia (Kurdjumov), is a significant insect pest of wheat (Triticum aestivum L.) and has a major economic impact worldwide, especially on winter wheat in the western United States. The continuing emergence of new RWA biotypes virulent to existing resistance genes reinforces the need for more durable resistance. Studies have indicated that resistance in previously susceptible plants can be produced by knock-down of susceptibility genes or other genes involved in host plant susceptibility. Therefore, investigation into genes involved in compatible RWA–wheat interactions could be a feasible approach to achieving durable RWA resistance. The objective of this study was to test whether silencing (1,3;1,4)-β-glucanase, previously observed to be highly induced in susceptible compared with resistant wheat during aphid infestation, would confer resistance to a susceptible wheat genotype. Barley stripe mosaic virus–mediated virus-induced gene silencing was employed to test whether (1,3;1,4)-β-glucanase is involved in the susceptible reaction of ‘Gamtoos-S' (GS). Controlled infestation with U.S. biotype RWA2 was done to assess aphid reproduction and host symptom development. Aphids on (1,3;1,4)-β-glucanase-silenced plants reproduced less per day and had longer prenymphipositional periods than those on control GS plants. Furthermore, the (1,3;1,4)-β-glucanase-silenced plants exhibited less chlorosis and greater dry weight compared with GS. Aphid reproduction and host plant symptom development showed linear relationships with (1,3;1,4)-β-glucanase transcript levels. Our results suggest that (1,3;1,4)-β-glucanase is required for successful infestation by the RWA and may be a susceptibility factor that could be exploited as a potential target for RWA resistance breeding.

Download Full-text