刺梨果实发育过程中糖和黄酮的积累及其与光照强度变化的相关性

doi:10.3864/j.issn.0578-1752.2021.24.010

Abstract

Abstract:

【Objective】The accumulation of sugar and total flavonoids and their association with changes of light intensity during fruits development of Rosa roxburghii Tratt. were studied, so as to provide a scientific basis for the fruit quality control of Rosa roxburghii. 【Method】 Four-year-old ‘Guinong 5’ fruit-bearing trees of Rosa roxburghii was used as the material in the experiment, the natural light intensity was used as control (R0, CK), and three treatments were set up with the light intensity reduced by 20% (R20), 40% (R40) and 60% (R60), respectively. The accumulations of soluble sugar and total flavonoids as well as activities of related anabolic enzymes in fruits were analyzed, and the relationship between them and light intensity was determined. 【Result】Sugar and total flavonoids were accumulated continuously during the growth and development of Rosa roxburghii fruit, but their accumulation of different development periods had significant differences. The sugar in fruits began to accumulate rapidly after the slow growth stage, and the accumulation of total soluble sugar and sucrose reached the highest at maturity stage, in which the accumulation of sucrose accounted for 36.97% of the total soluble sugar. The accumulation of glucose and fructose in the rapid expansion period was the largest, but only accounted for 10.50% and 18.18% of the maximum accumulation of total soluble sugar at fruit maturity stage, respectively. Rosa roxburghii fruit was sucrose accumulation type. The total flavonoids in fruits were rapidly accumulated from young fruit stage to rapid fruit expansion stage, and then the accumulation of total flavonoids did not increase significantly. During the development of Rosa roxburghii fruit, the accumulation of sugar and total flavonoids under different light intensities was significantly different, while the decrease of light intensity was not conducive to the accumulation of sugar and total flavonoids in fruits. Sucrose synthase (SS), sucrose phosphate synthase (SPS), invertase (IVR) were the key enzymes affecting the metabolism of sugar in fruit. Alanine ammonia lyase (PAL), cinnamic acid-4-hydroxylase (C4H), 4-coumaric acid coenzyme A ligase (4CL) and chalcone synthase (CHS) were the key enzymes affecting the metabolism of flavonoids in fruit. The changes of light intensity were closely related to the accumulation of sugar, total flavonoids and the activities of related anabolic enzymes in fruits, while the activities of SS, SPS, IVR, PAL, C4H, 4CL and CHS were significantly inhibited by the decrease of light intensity. SS and SPS were sensitive to the decrease of light intensity during the whole fruit development of Rosa roxburghii. There was a significant positive correlation between sugar and total flavonoids accumulation in fruits, while the accumulation of sugar and total flavonoids and the activities of SS, SPS, IVR, PAL, C4H, 4CL and CHS were significantly or extremely significantly positively correlated with the changes of light intensity. 【Conclusion】Rosa roxburghii fruit were sucrose accumulation type, and the sugar in fruits began to accumulate rapidly after the slow growth stage, while the total flavonoids in fruits were rapidly accumulated from young fruit stage to rapid fruit expansion stage. The decrease of light intensity was not conducive to the accumulation of sugar and flavonoids in fruits. The contents of sugar and flavonoids in fruits could be increased by improving light conditions in production, which was conducive to improving the quality of Rosa roxburghii fruit.

Key words: Rosa roxburghii, fruit, light intensity, sugar, total flavonoids

FAN WeiGuo,PAN XueJun,HE ChunLi,CHEN Hong,ZHOU YuJia. Accumulation of Sugar and Flavonoids as Well as Their Association with Changes of Light Intensity During Fruit Development of Rosa roxburghii[J].Scientia Agricultura Sinica, 2021, 54(24): 5277-5289.

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处理 Treatment	光照强度Light intensity (μmol·m^-2·s^-1)
处理 Treatment	幼果期 Young fruit stage (S1)	缓慢生长期 Slow growing stage (S2)	快速膨大期 Rapid expansion stage (S3)	成熟期 Maturity stage (S4)
R0 (CK)	1498	1527	1782	1664
R20	1190	1251	1458	1322
R40	879	905	1092	971
R60	581	622	722	659

不同光照强度 Different light intensity	积累量 Accumulation
不同光照强度 Different light intensity	蔗糖 Sucrose	葡萄糖 Glucose	果糖 Fructose	可溶性总糖 Total soluble sugar	总黄酮 Flavonoids
幼果期 Young fruit stage	y=0.015x-5.43 r=0.98**	y=0.0119x-1.54 r=0.97**	y=0.0139x-1.59 r=0.95**	y=0.065x-12.21 r=0.96**	y=0.0171x-0.78 r=0.93**
缓慢生长期 Slow growing stage	y=0.032x-8.04 r=0.98**	y=0.0273x-0.65 r=0.96**	y=0.0287x+3.15 r=0.97**	y=0.1255x+7.78 r=0.96**	y=0.0287x+2.83 r=0.93**
快速膨大期 Rapid expansion stage	y=0.1003x-24.17 r=0.97**	y=0.0969x+9.73 r=0.90**	y=0.1162x+32.46 r=0.87**	y=0.3828x+33.67 r=0.93**	y=0.0396x-3.38 r=0.95**
成熟期 Maturity stage	y=0.1774x+132.59 r=0.95**	y=0.0476x+48.196 r=0.95**	y=0.0592x+120.54 r=0.88**	y=0.449x+441.30 r=0.94**	y=0.0284x+15.95 r=0.98**

总黄酮积累量 Flavonoids accumulation	可溶性糖积累量 Soluble sugar accumulation
总黄酮积累量 Flavonoids accumulation	蔗糖 Sucrose	葡萄糖 Glucose	果糖 Fructose	可溶性总糖 Total soluble sugar
幼果期 Young fruit stage	y=0.8093x-3.55 r=0.96**	y=0.6630x-0.45 r=0.98**	y=0.7646x-0.13 r=0.96**	y=3.5979x-5.72 r=0.97**
缓慢生长期 Slow growing stage	y=1.0254x-8.26 r=0.97**	y=0.8750x-0.84 r=0.95**	y=0.9003x+3.69 r=0.94**	y=4.0679x+5.55 r=0.96**
快速膨大期 Rapid expansion stage	y=2.4503x-11.88 r=0.98**	y=2.5359x+13.70 r=0.98**	y=3.1106x+33.97 r=0.97**	y=9.7344x+62.71 r=0.99**
成熟期 Maturity stage	y=6.0485x+42.49 r=0.95**	y=1.6529x+22.60 r=0.96**	y=2.0889x+86.99 r=0.91**	y=15.72x+193.18 r=0.96**

酶活性 Enzyme activity (μg·min^-1·g^-1FW)	处理 Treatment	幼果期 Young fruit stage	缓慢生长期 Slow growing stage	快速膨大期 Rapid expansion stage	成熟期 Maturity stage
蔗糖合成酶 Sucrose synthetase (SS)	R0 (CK)	386.17±19.10aC	416.81±27.19aC	482.73±11.97aB	521.10±15.68aA
	R20	344.73±17.40bC	385.93±26.83bB	414.16±17.29bB	472.89±25.25bA
	R40	303.48±12.66cD	325.67±12.96cC	347.38±10.48cB	423.53±25.53cA
	R60	263.84±7.85dD	292.78±3.56dC	342.83±12.67cB	408.85±14.22cA
蔗糖磷酸合成酶 Sucrose phosphate synthase (SPS)	R0 (CK)	297.65±15.33aD	365.38±10.21aC	488.21±18.40aB	649.26±24.66aA
	R20	218.06±14.30bD	317.16±8.29bC	384.44±22.96bB	491.42±14.37bA
	R40	137.18±9.71cD	225.58±15.59cC	299.49±22.89cB	349.49±19.76cA
	R60	90.86±1.90dD	165.67±5.44dC	255.85±16.39dB	324.25±15.81cA
转化酶 Invertase (IVR)	R0 (CK)	622.56±17.71aA	486.62±18.46aB	233.21±15.44aC	189.83±11.80aD
	R20	595.84±13.75aA	466.54±17.71aB	218.24±19.77aC	188.75±8.82aD
	R40	472.32±21.65bA	384.51±19.25bB	195.16±18.55bC	157.49±10.79bC
	R60	437.69±4.90cA	340.60±17.76cB	185.73±10.99bC	146.03±9.39bC

酶活性 Enzyme activity	处理 Treatment	幼果期 Young fruit stage	缓慢生长期 Slow growing stage	快速膨大期 Rapid expansion stage	成熟期 Maturity stage
苯丙氨酸解氨酶 PAL (U·g^-1 FW)	R0 (CK)	0.20±0.02aC	0.20±0.01aC	0.22±0.02aB	0.28±0.02aA
	R20	0.18±0.01bC	0.18±0.01bC	0.19±0.01bB	0.26±0.02bA
	R40	0.16±0.01cB	0.16±0.01cB	0.17±0.01cB	0.24±0.01cA
	R60	0.13±0.01dC	0.13±0.01dC	0.15±0.01dB	0.20±0.01dA
肉桂酸-4-羟化酶 C4H (U·g^-1FW)	R0 (CK)	0.26±0.00aB	0.28±0.01aA	0.28±0.01aA	0.27±0.01aAB
	R20	0.21±0.01bD	0.26±0.01abA	0.23±0.01bC	0.24±0.02bB
	R40	0.20±0.01cC	0.25±0.01bA	0.21±0.01cBC	0.22±0.01cB
	R60	0.19±0.00cB	0.20±0.01cA	0.20±0.01cA	0.16±0.01dC
4-香豆酸辅酶A连接酶 4CL (U·g^-1 FW)	R0 (CK)	5.83±0.04aB	6.38±0.07aA	5.47±0.17aC	5.02±0.16aD
	R20	5.22±0.20bB	5.65±0.13bA	5.06±0.08bBC	4.90±0.20aC
	R40	5.17±0.11bA	5.31±0.05cA	4.71±0.18cB	4.60±0.10bB
	R60	4.79±0.10cAB	4.91±0.09dA	4.62±0.11cB	4.30±0.10cC
查尔酮合成酶 CHS (U·mg^-1 FW)	R0 (CK)	16.95±0.36aA	13.68±0.11aC	13.38±0.10aB	12.02±0.35aC
	R20	14.34±0.18bA	11.62±0.08bC	13.03±0.23aB	10.93±0.17bC
	R40	13.32±0.27cA	11.52±0.08bBC	12.17±0.12bB	10.72±0.10bC
	R60	13.07±0.30cA	10.17±0.06cB	10.08±0.11cB	9.05±0.04cC

Accumulation of Sugar and Flavonoids as Well as Their Association with Changes of Light Intensity During Fruit Development of Rosa roxburghii

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不同光照强度 Different light intensity	酶活性Enzymes activity
不同光照强度 Different light intensity	蔗糖合成酶 SS	蔗糖磷酸合成酶 SPS	转化酶 IVR
幼果期 Young fruit stage	y=0.1333x+186.35 r=0.99**	y=0.2294x-52.00 r=0.99**	y=0.2120x+304.70 r=0.91**
缓慢生长期 Slow growing stage	y=0.1421x+202.35 r=0.95**	y=0.2262x+24.99 r=0.99**	y=0.1712x+235.35 r=0.90**
快速膨大期 Rapid expansion stage	y=0.1357x+225.26 r=0.93**	y=0.2196x+79.56 r=0.97**	y=0.0463x+149.61 r=0.91**
成熟期 Maturity stage	y=0.1154x+323.11 r=0.94**	y=0.3328x+68.69 r=0.96**	y=0.0155x+165.15 r=0.56*

不同光照强度 Different light intensities	酶活性Enzymes activity
不同光照强度 Different light intensities	苯丙氨酸解氨酶 PAL	肉桂酸-4-羟化酶 C4H	4-香豆酸辅酶A连接酶 4CL	查尔酮合成酶 CHS
幼果期 Young fruit stage	y=3E-05x+0.14 r=0.90**	y=6E-05x+0.16 r=0.86**	y=0.0010x+4.18 r=0.92**	y=3.4906x+11050.00 r=0.86**
缓慢生长期 Slow growing stage	y=3E-05x+0.14 r=0.88**	y=7E-05x+0.17 r=0.87**	y=0.0015x+3.91 r=0.97**	y=1.8717x+9332.40 r=0.80**
快速膨大期 Rapid expansion stage	y=5E-05x+0.13 r=0.89**	y=6E-05x+0.15 r=0.91**	y=0.0008x+3.96 r=0.90**	y=1.3312x+11032.00 r=0.74**
成熟期 Maturity stage	y=4E-05x+0.20 r=0.89**	y=3E-05x+0.21 r=0.70**	y=0.0006x+4.11 r=0.86**	y=0.9818x+9658.50 r=0.71**

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