Effects of Ultraviolet-B Irradiance on Soybean

Mirecki, Roman M.; Teramura, Alan H.

doi:10.1104/pp.74.3.475

Cited by 415 publications

(81 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chlorophyll content has been reported either to decrease (Tevini, Iwanzik & Teramura, 1983) or to increase (Teramura & Caldwell, 1981;Mirecki & Teramura, 1984), and m some cases to show no response to u.v.-B radiation (Panagopoulos, Bornman & Bjorn, 1992). However, some of the responses might well result from different experimental conditions and extraction protocols.…”

Section: Resultsmentioning

confidence: 99%

A three‐dimensional representation of the relationship between penetration of u.v.‐B radiation and u.v.‐screening pigments in leaves of Brassica napus

1995

View full text Add to dashboard Cite

SUMMARYA three-dimensional (3-D) representation of the penetration of u.v.-B (280-320 nm) radiation using fibre-optic microprobes, and of the spectrophotometric analysis of u.v.-screening pigments in leaves of Bras.ii.ca napus L. cv. Ceres is presented. In this way the results from radiation measurements were directly related to the distribution of u.v.-screening pigments. Brassica napus was grown in a greenhouse chamber with a photon flux density of 740 /imo\ m"^ s"^ photosynthetically active radiation (400-700 nm) with or without the addition of u.v.-B radiation. The amount of u.v-B added was equi\-alent to 9 kj m"' d"' biologically effective u.v.-B. Growth parameters measured included leaf thickness and dry weight. Ultraviolet-B radiation stimulated the accumulation of increased amounts of screening pigments, located mostly beneath the adaxial surface of tbe leaf, l^eaf dry weight decreased by 15 "o in u.v.-treated plants and, on a dry weight basis, chlorophyll content increased by 19 "o in treated leaves. The chlorophyll profiles within leaves from both control and u.v.-treated plants showed an increase from the adaxial surface to a plateau in the middle of the leaf, at a leaf depth of c. 150-320/im. Relatively large amounts of 285 nm radiation penetrated into leaves of u.v.-B treated plants to sites located within the initial 40 //m of the leaf. Thus, despite the presence of additional screening pigments, u.v.-B radiation was capable of reaching potential targets within the epidermis and mesophyll.

show abstract

Section: Resultsmentioning

confidence: 99%

A three‐dimensional representation of the relationship between penetration of u.v.‐B radiation and u.v.‐screening pigments in leaves of Brassica napus

1995

View full text Add to dashboard Cite

show abstract

“…Leaf area and UV absorbing substances (UAS) were monitored in fully matured third trifoliate leaves at fifth node. Leaf discs of 100 mm 2 were taken and these discs were extracted in 10 ml of acidified methanol (79:20:1 v/v methanol, water, HCl) for measuring UV absorbing compounds, according to the procedure of Mirecki and Teramura, (1984). The absorbance was taken at 300 nm using Shimadzu Spectrophotometer.…”

Section: Methodsmentioning

confidence: 99%

Intraspecific variation in sensitivity to ambient ultraviolet-B radiation in growth and yield characteristics of eight soybean cultivars grown under field conditions

Baroniya¹,

Kataria²,

Pandey³

et al. 2011

Braz. J. Plant Physiol.

View full text Add to dashboard Cite

The present study was conducted with eight cultivars of soybean (Glycine max) to determine the effect of exclusion of solar UV-B on the vegetative growth (plant height, leaf area, no. of nodes), UV absorbing compounds (implicated in UV protection) and crop yield (No. of pods and seed weight) and to determine the cultivar difference in their sensitivity to ambient UV-B. Exclusion of solar UV-B enhanced the vegetative growth and yield of all the soybean cultivars. The results showed a significant inverse association between the enhancement in vegetative growth and number of pods among the cultivars tested, indicating differences in the carbon partitioning amongst the cultivars by the way of exclusion of solar UV-B. NRC-7, Pusa-24 and JS-335 showed maximum promotion in vegetative growth and less enhancement in crop yield after solar UV-B exclusion. Kalitur, JS71-05, Hardee, PK-472 and PK-1029 showed improved performance both in terms of number of pods/plant and seed weight after solar UV-B exclusion. An enhancement in the crop yield by exclusion of solar UV-B indicated poor response of the cultivar to the ambient solar UV-B; these cultivars would be more suitable at latitudes, which received less UV-B. According to UV-SI, sensitivity of eight Indian soybean cultivars to ambient level of UV-B (280-320 nm) radiation had the following descending order; PK-472 > JS-335 > Hardee > Kalitur > JS71-05 > Pusa-24 > NRC-7 > PK-1029. These findings suggest the way to select the best-suited cultivar for particular latitude.

show abstract

“…Absorbencies of centrifuged extracts were measured between 300 and 700 nm after appropriate dilution (Mirecki and Teramura, 1984).…”

Section: Methodsmentioning

confidence: 99%

UV-B Effect on Constituents of Azolla caroliniana

Ibrahim

Mostafa

2007

Zeitschrift Für Naturforschung C

View full text Add to dashboard Cite

Changes in growth and ultrastructure of Azolla caroliniana in response to elevated UV-B radiation were investigated. Exposure of plants to UV-B radiation for 1, 8, 16, 24 and 48 h exhibited a significant decrease in biomass and relative growth rate. This decrease resulted in an increase in doubling time over the control. Also, Chl a and b contents were significantly decreased especially after 16 h. The reduction was accompanied by a decrease in 5-aminolaevulinic acid content (precursor of chlorophyll). On the other hand, contents of carotenoid and UV-absorbing phenolic compounds (flavonoids and anthocyanins) were increased.

show abstract

Effects of Ultraviolet-B Irradiance on Soybean

Cited by 415 publications

References 21 publications

A three‐dimensional representation of the relationship between penetration of u.v.‐B radiation and u.v.‐screening pigments in leaves of Brassica napus

A three‐dimensional representation of the relationship between penetration of u.v.‐B radiation and u.v.‐screening pigments in leaves of Brassica napus

Intraspecific variation in sensitivity to ambient ultraviolet-B radiation in growth and yield characteristics of eight soybean cultivars grown under field conditions

UV-B Effect on Constituents of Azolla caroliniana

Contact Info

Product

Resources

About