Chlorophyll fluorescence imaging: a new method for rapid detection of herbicide resistance in <i><scp>A</scp>lopecurus myosuroides</i>

Kaiser, Yasmin I.; Menegat, Alexander; Gerhards, Roland

doi:10.1111/wre.12043

Cited by 37 publications

(37 citation statements)

References 26 publications

(26 reference statements)

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“…Hence, the requirements for finding a threshold herbicide dose to discriminate between sensitive and resistant populations in a laboratory agar test were given. Kaiser et al (2013) were able to identify resistant and sensitive A. myosuroides populations within 48 h and 72 h after transplanting to fenoxaprop-Pethyl and iodosulfuron + mesosulfuron treated agar, respectively. Our preliminary studies showed that sensitive and resistant A. spica-venti populations had a difference of up to 20% in their F v /F m values 48 h and 72 h after transplanting to pinoxaden and pyroxsulam-treated agar, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Laboratory study. The four A. spica-venti populations were tested for herbicide sensitivity in a herbicide treated system modified according to Kaiser et al (2013). The experiments (EXP) were performed between October and December 2017.…”

Section: Methodsmentioning

confidence: 99%

“…tem II (F v /F m ) (Kaiser et al 2013). Especially the F v /F m value is a commonly used parameter in plant physiology, reliably quantifying stress of diverse origin in plants (Valladares andPearcy 1997, Baker 2008).…”

mentioning

confidence: 99%

“…Especially the F v /F m value is a commonly used parameter in plant physiology, reliably quantifying stress of diverse origin in plants (Valladares andPearcy 1997, Baker 2008). Kaiser et al (2013) assessed the F v /F m values of Alopecurus myosuroides Huds. seedlings after transplanting to fenoxaprop-P-ethyl and iodosulfuron + mesosulfuron-treated agar.…”

mentioning

confidence: 99%

“…The aims of this study were: (i) to validate the method by Kaiser et al (2013) with the weed A. spica-venti and the active substances pinoxaden and pyroxsulam; (ii) to find differences in the F v /F m values between sensitive and resistant plants depending on herbicide concentrations; (iii) to show the suitability and reliability of a chlorophyll fluorescence-based test on herbicide resistance in A. spica-venti.…”

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confidence: 99%

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Detecting herbicide-resistant Apera spica-venti with a chlorophyll fluorescence agar test

Linn¹,

Košnarová²,

Soukup³

et al. 2018

PLANT SOIL ENVIRON

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With the worldwide increase of herbicide-resistant weed populations, there is a need for fast and reliable screening methods for early detection of herbicide-resistant weeds. Several tests on herbicide resistance in weeds exist (Beckie et al. 2000). Until today, the most common method to detect herbicide-resistant weed plants are timeconsuming and labour-intensive greenhouse bioassays. The major disadvantage of this test is that the results become available only for the next growing season. One test that was developed to overcome this limitation was the Syngenta rapid in-season quick test (RISQ) (Kaundun et al. 2011). Here, seedlings are transplanted to herbicide-treated agar and the survivorship is recorded after 10 days. It is a reliable method for testing herbicide resistance in weeds for post-emergent herbicides (Brosnan et al. 2017). While the RISQ provides information if a plant is resistant or not, it does not give estimation about the level of resistance.To receive information about the resistance level of a weed population, the experimental setup of the RISQ was combined with an assessment of the maximum quantum efficiency of photosysDetecting herbicide-resistant Apera spica-venti with a chlorophyll fluorescence agar test

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Detecting herbicide-resistant Apera spica-venti with a chlorophyll fluorescence agar test

Linn¹,

Košnarová²,

Soukup³

et al. 2018

PLANT SOIL ENVIRON

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Characterization and management of metsulfuron‐resistant Rumex dentatus biotypes in Northwest India

et al. 2022

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Evolution of herbicide resistance in weeds is a serious threat for sustainable crop production. There were reports of poor control of toothed dock (Rumex dentatus L.) with metsulfuron‐methyl herbicide, an acetolactate synthase (ALS) inhibitor used in wheat (Triticum aestivum L.) at farmers’ fields in Northwest India. Two‐year greenhouse and field studies were conducted to (a) determine the level of metsulfuron resistance in toothed dock biotypes collected from farmers’ fields and (b) find effective herbicides for its management. Metsulfuron‐resistant toothed dock biotypes were 6.8‐ to 23.0‐fold less sensitive relative to the susceptible biotype based on resistance index values. Metabolic herbicide resistance is less likely as there was no evidence of involvement of cytochrome P450s those inhibited by malathion. The resistant toothed dock biotypes had a Trp‐574‐Leu amino acid substitution in the ALS gene. Application of premixes such as metsulfuron methyl plus carfentrazone ethyl (5 + 20 g ha–1) and halauxifen plus fluroxypyr (7.3 + 233.3 g ha–1) resulted in effective control of metsulfuron‐resistant toothed dock biotypes in screenhouse and field studies. This first report elucidating the mechanism of resistance to metsulfuron methyl in toothed dock from India will help in devising sustainable weed management approaches.

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Chlorophyll Fluorescence Measurement: A New Method to Test the Effect of Two Adjuvants on the Efficacy of Topramezone on Weeds

Zhang¹,

Jäck

Menegat

et al. 2019

Computer and Computing Technologies in Agriculture XI

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To test the effect of adjuvant on the efficacy of herbicides in a fast and non-destructive way is very helpful for selecting a right spray adjuvant for herbicide, which is an important strategy to enhance the efficacy of herbicides, reduce application dose, and enhance environmental safety.Experiments were conducted in the laboratory and greenhouse to study the effect of 2 adjuvants-Methylated seed oil (MSO) and organosilicone on the efficacy of topramezone on grass weed giant foxtail(Setaria faberi Herrm.) and broadleaved weed velvetleaf(Abutilon theophrasti Medik.) using weed leaves chlorophyll fluorescence measurement and whole plant biomass test. The results indicated that the top leaf maximum quantum efficiency (Fv/Fm) of two weeds treated by herbicide mixed with MSO adjuvant was significantly lower than that of treated by herbicide alone from the 2-3 days after treatment, while the difference between treatments of herbicide mixed with organosilicone adjuvant and herbicide applied alone was not significant. Results of the whole-plant pot tests showed biomass of the treatment of topramezone mixed with MSO was significantly lower than that of herbicide applied alone. This is similar to the result of chlorophyll fluorescence test. Chlorophyll fluorescence measurement has proven to be an attractive tool for studying the effect of the adjuvants on the efficacy of herbicide.

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Chlorophyll fluorescence imaging: a new method for rapid detection of herbicide resistance in Alopecurus myosuroides

Cited by 37 publications

References 26 publications

Detecting herbicide-resistant Apera spica-venti with a chlorophyll fluorescence agar test

Detecting herbicide-resistant Apera spica-venti with a chlorophyll fluorescence agar test

Characterization and management of metsulfuron‐resistant Rumex dentatus biotypes in Northwest India

Chlorophyll Fluorescence Measurement: A New Method to Test the Effect of Two Adjuvants on the Efficacy of Topramezone on Weeds

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