The effect of low growth temperature on Hill reaction and Photosystem 1 activities in three biotypes of Kochia scoparia (L.) Schrad. with different sensitivity to atrazine and ALS-inhibiting herbicides

  title={The effect of low growth temperature on Hill reaction and Photosystem 1 activities in three biotypes of Kochia scoparia (L.) Schrad. with different sensitivity to atrazine and ALS-inhibiting herbicides},
  author={D. Hol{\'a} and M. Ko{\vc}ov{\'a} and O. Rothov{\'a} and D. Chodov{\'a} and J. Mikulka},
  journal={Plant Soil and Environment},
A possible influence of low growth temperature on the photochemical activity of isolated mesophyll chloroplasts was studied in three biotypes of kochia [Kochia scoparia (L.) Schrad.] that showed either double resistance to both atrazine and acetolactate synthase (ALS) inhibitors (Bubny biotype), resistance to ALS inhibitors but not to atrazine (Jihlava biotype), or sensitivity to both types of herbicides (Karlin biotype). Plants 5 or 12 weeks old since the date of sowing were examined. The… Expand

Figures and Tables from this paper

Pollen-mediated gene flow and transfer of resistance alleles from herbicide-resistant broadleaf weeds
The findings from this review verify that intra- and interspecific gene flow can occur and, even at a low rate, could contribute to the rapid spread of herbicide resistance alleles. Expand
Emergence Dynamics of Kochia (Kochia scoparia) Populations from the U.S. Great Plains: A Multi-Site-Year Study
This differential emergence pattern of kochia populations reflects the occurrence of different emergence “biotypes” and emphasizes the need to adopt more location-specific and diversified weed control tactics to manage k Kochia seedbanks. Expand


Atrazine resistance entails a limited xanthophyll cycle activity, a lower PSII efficiency and an altered pattern of excess excitation dissipation.
All the D1 mutant weeds had limited light-induced non-photochemical (NPQ) and photochemical (qP) quenching capacities, and displayed a higher photosensitivity, as characterized by the ratio (1-qP)/NPQ and a higher susceptibility to photoinhibition. Expand
Molecular Basis of Resistance to s-Triazine Herbicides in Poa annua L. and Its Photosynthetic Properties under Different Light Conditions
A simazine resistant biotype of Poa annua L. was found in a golf course in Shizuoka prefecture, Japan and showed increased sensitivity to photoinhibition both at whole plant and at isolated PS II membrane levels, indicating that the increased susceptibility in the resistant biotypes to the photoin inhibition is due to the substitution of serine 264 to glycine in the Dl protein. Expand
Comparison of Photosynthetic Performance in Triazine-Resistant and Susceptible Biotypes of Amaranthus hybridus.
It appears that the lower rate of light-saturated CO(2) reduction of the resistant biotype is not limited by electron transfer capacity and therefore is not a direct consequence of those factors which confer triazine resistance. Expand
The Effect of Low Growth Temperature on Hill Reaction and Photosystem 1 Activities and Pigment Contents in Maize Inbred Lines and Their F1 Hybrids
Young plants of maize inbred lines CE777, CE704, and CE810 and their F1 hybrids displaying a positive heterotic effect in various photosynthetic characteristics were exposed to low temperature during their early growth developmental stage to determine the genetic basis of heterosis in F1 generation. Expand
Atrazine-resistant biotypes of Conyza canadensis have altered fluorescence quenching and xanthophyll cycle pattern
The higher photosensitivity of AR plants and the lowered zeaxanthin formation in these biotypes suggest that, besides Dl protein mutation, the limited conversion of xanthophyll cycle components may contribute to the higher susceptibility to photoinhibition ofAR plants. Expand
A review of physiological and biochemical aspects of resistance to atrazine and paraquat in Hungarian weeds.
Pleiotropic effects accompanying atrazine resistance were investigated inatrazine-resistant (AR) and susceptible (S) biotypes of horseweed (Conyza canadensis (L) Cronq). Expand
Short-Term Responses of Photosystem II to Heat Stress in Cold-Acclimated Atrazine-Resistant and Susceptible Biotypes of Erigeron canadensis (L.)
When leaves of atrazine-resistant (AR) and atrazine-sensitive (S) Erigeron canadensis (L.) plants grown at 5 °C were exposed to an elevated temperature (35 °C) for 30 min, the critical (Tc) and peakExpand
The Effect of Light and Temperature on Competition between Atrazine Susceptible and ResistantBrassica rapa
Changes in both light and temperature can have large effects on the relative competitiveness of triazine R and S biotypes in this species with implications for the spread of resistance genes through semi-natural communities. Expand
A kochia (Kochia scoparia) biotype resistant to triazine and ALS-inhibiting herbicides
Whole-plant phytotoxicity assays confirmed that the kochia biotype from McDonough County was resistant to triazine, imidazolinone (imazethapyr), and sulfonylurea (thifensulfuron and chlorsulfuron) herbicides and results from chlorophyll fluorescence assays indicated that triazine resistance was also site-of-action mediated. Expand